STUDENT MANAGEMENT SYSTEM.doc (Size: 770.5 KB / Downloads: 7104)
STUDENT MANAGEMENT SYSTEM
FALCON FRANCIS MANJU V RAVINDRAN
RANJITH KIRAN K VINU K THANKACHAN
Student Management System deals with all kind of student details, academic related reports, college details, course details, curriculum, batch details and other resource related details too. It tracks all the details of a student from the day one to the end of his course which can be used for all reporting purpose, tracking of attendance, progress in the course, completed semesters years, coming semester year curriculum details, exam details, project or any other assignment details, final exam result; and all these will be available for future references too.
Our program will have the databases of Courses offered by the college under all levels of graduation or main streams, teacher or faculty's details, batch execution details, students' details in all aspects.
This program can facilitate us explore all the activities happening in the college, even we can get to know which teacher / faculty is assigned to which batch, the current status of a batch, attendance percentage of a batch and upcoming requirements of a batch.
Different reports and Queries can be generated based of vast options related to students, batch, course, teacher / faculty, exams, semesters, certification and even for the entire college.
SMS_College SMS_Category SMS_Login SMS_Sub SMSStudacademic SMS_Studpersonal SMS_Examdetail SMS_Finalreport SMS_Studparti
LIST OF TABLES
2 3 3 3 5 5 8 8 9
LIST OF FIGURES
NAME OF FIGURES
LEVEL 1 DFD LEVEL 2 DFD COLLEGE DETAILS DEPARTMENT DETAILS SIGNUP DETAILS
SUBJECT DETAILS PERSONAL DETAILS
PARENT DETAILS ACADEMIC DETAILS EXAM DETAILS STUDENT PARTICULARS FINAL REPORT
About the project
The student management system is an automated version of manual Student Management System. It can handle all details about a student. The details include college details, subject details, student personnel details, academic details, exam details etc...
In case of manual system they need a lot of time, manpower etc.Here almost all work is computerized. So the accuracy is maintained. Maintaining backup is very easy. It can do with in a few minutes. Our system has two type of accessing modes, administrator and user. Student management system is managed by an administrator. It is the job of the administrator to insert update and monitor the whole process. When a user log in to the system. He would only view details of the student. He can't perform any changes .The system has four modules. They are
College and Department details
Login and subject
CHAPTER 2 MODULES
Student Management System is expected to maintain a number of details. The needed modules are given below.
College and Department details
This module deals with the college details and different departments in the college. The college details are stored in the table SMSCollege. And department details are stored in SMSCategory. It deals with the details of college and department. TABLE: SMSCollege
SMS_Coll_Collegeid varchar(50) Not Null
SMS_Coll_Collegename varchar(300) Not Null
SMS_Coll_Address varchar(300) Not Null
SMS_Coll_Pincode varchar(50) Not Null
SMS_Coll_District varchar(50) Not Null
SMS_Coll_State varchar(50) Not Null
SMS_Coll_Phone1 varchar(50) Not Null
SMS_Coll_Phone2 varchar(50) Not Null
SMS_Coll_Fax varchar(50) Not Null
SMS_Coll_Email varchar(100) Not Null
SMS_Coll_Website varchar(100) Not Null
SMS_Coll_Emblem varchar(100) Not Null
This table is used to store the details of college like college name, address, phone numbers, fax, eÃ‚Â¬mail id, website. This table is filled at first.
This table is used to store the details of different department and its category. Category specifies the course is bachelor or master degree. Department gives the various departments. Duration specifies the number of semesters.
Login and subject
This module based with the login process and subject details. The login process specifies the user mode such as administrator or user. This module consist of two tables, SMSLogin and SMSSub . It contains the details of login process and subject details. Login process includes sign in sign up, sign out, change password.
SMS_Log_Category varchar(50) Not Null
SMS_Log_Department varchar(50) Not Null
SMS_Log_Username varchar(20) Not Null
SMS_Log_Password varchar(20) Not Null
SMS_Log_Privilege varchar(20) Not Null
The table stores the values like category, department, username, password and privilege. The privilege specifies the user mode is administrator or user.
SMS_Sub_Category varchar(50) Not Null
SMS_Sub_Department varchar(50) Not Null
SMS_Sub_Semester varchar(50) Not Null
SMS_Sub_Noofsubjects int Not Null
This table shows the details of the category, department, semester, and number of subjects in semester and different subjects in various department and semesters.
This module deals with the student academic details and personnel details. This module consists of the tables SMSStudacademic and SMSStudpersonal.
SMS_Studaca_Admino varchar(50) Not Null
SMS_Studaca_Batch varchar(50) Not Null
SMS_Studaca_Category varchar(50) Not Null
SMS_Studaca_Department varchar(50) Not Null
SMS_Studaca_Sem varchar(50) Not Null
SMS_Studaca_Name varchar(50) Not Null
SMS_Studaca_Edulquali 1 varchar(50)
This table shows the values like admission number, batch, category, department, joining semester, his/her name, their qualifications, entrance rank and photo.
SMS_Studper_Fatherj ob varchar(50)
SMS_Studper_Motherj ob varchar(50)
This table stores the admission number, the personnel details like date of birth, religion, cast, gender, blood group, day scholar or hosteller, e-mail, address, parent details and annual income.
This module deals with the student exam details, student particular such as various activities, final report. The tables comes in this modules are SMSExamdetail, SMSFinalreport and SMSStudparti.
SMS_Exam_Studcode varchar(50) Not Null
SMS Exam Internalmax varchar(50)
SMS Exam Externalmax varchar(50)
SMS Exam Externalminimum varchar(50)
SMS_Exam_Pa ssout varchar(50)
SMS Exam Emark3 varchar(50)
SMS Exam Emark5 varchar(50)
SMS Exam Emark6 varchar(50)
This table stores the values stud code, register number, semester, month and year of exam, internal and external maximum marks, the marks obtained for various subjects like its internal, external and total mark. This table gives the performance of students in various exams.
SMS_Final_Adminno varchar(50) Not Null
SMS_Final_Miniproj ectworkdone varchar(MAX)
SMS_Final_Mainproj ectworkdone varchar(MAX)
Not Null Not Null
This table stores the values of admission number, mini project done, main project done, technical activities, neatness and standard of lab record, character and conduct and remarks.
SMS_Studparti_cour se star varchar(50)
This table stores the values of extra curricular details, admission number , scholarship, disciplinary action , starting of course, tutor.
CHAPTER 3 SYSTEM STUDY
System study aims at establishing requests for the system to be acquired, developed and installed. It involves studying and analyzing the ways of an organization currently processing the data to produce information. Analyzing the problem thoroughly forms the vital part of the system study. In system analysis, prevailing situation of problem carefully examined by breaking them into sub problems. Problematic areas are identified and information is collected. Data gathering is essential to any analysis of requests. It is necessary that this analysis familiarizes the designer with objectives, activities and the function of the organization in which the system is to be implemented.
3.1 STUDY OF EXISTING SYSTEM
Today in colleges student details are entered manually. The student details in separate records are tedious task. Referring to all these records and updating is needed. There is a chance for more manual errors.
3.2 PROPOSED SYSTEM
By developing the system we can attain the following facilities.
> Easy to handle and feasible.
> Cost reduction.
> Fast and convenient.
3.3 INTRODUCTION TO .NET
This proposed software is going to be developed using the latest technology from Microsoft called Microsoft. NET and it is the software that connects information, people, systems, and devices. It spans clients, servers, and developer tools, and consists of:
Â¢ The .NET Framework 1.1, used for building and running all kinds of software, including Web-based applications, smart client applications, and XML Web servicesâ€components that facilitate integration by sharing data and functionality over a network through standard, platform-independent protocols such as XML (Extensible Markup Language), SOAP, and HTTP.
Â¢ Developer tools, such as Microsoft Visual Studio.NET 2003, which provides an integrated
development environment (IDE) for maximizing developer productivity with the .NET Framework.
Â¢ A set of servers, including Microsoft Windows Server 2003, Microsoft SQL Server, and Microsoft BizTalk Server, that integrates, runs, operates, and manages Web services and Web-based applications.
Client software, such as Windows XP, Windows CE, and Microsoft Office XP, that helps developers deliver a deep and compelling user experience across a family of devices and existing products
3.3.1 ADVANTAGES OF NET
The .NET Framework offers a number of advantages to developers. The following paragraphs describe them in detail.
126.96.36.199 Consistent programming model
Different programming languages have different approaches for doing a task. For example, accessing data with a VB 6.0 application and a VC++ application is totally different. When using different programming languages to do a task, a disparity exists among the approach developers use to perform the task. The difference in techniques comes from how different languages interact with the underlying system that applications rely on.
With .NET, for example, accessing data with a VB .NET and a C# .NET looks very similar apart from slight syntactical differences. Both the programs need to import the System. Data namespace, both the programs establish a connection with the database and both the programs run a query and display the data on a data grid. The VB 6.0 and VC++ example mentioned in the first paragraph explains that there is more than one way to do a particular task within the same language. The .NET example explains that there's a unified means of accomplishing the same task by using the .NET Class Library, a key component of the .NET Framework.
The functionality that the .NET Class Library provides is available to all .NET languages resulting in a consistent object model regardless of the programming language the developer uses.
188.8.131.52 Direct support for security
Developing an application that resides on a local machine and uses local resources is easy. In this scenario, security isn't an issue as all the resources are available and accessed locally. Consider an application that accesses data on a remote machine or has to perform a privileged task on behalf of a nonprivileged user. In this scenario security is much more important as the application is accessing data from a remote machine.
With .NET, the Framework enables the developer and the system administrator to specify method level security. It uses industry-standard protocols such as TCP/IP, XML, SOAP and HTTP to facilitate distributed application communications. This makes distributed computing more secure because .NET developers cooperate with network security devices instead of working around their security limitations.
184.108.40.206 Simplified development efforts
Let's take a look at this with Web applications. With classic ASP, when a developer needs to present data from a database in a Web page, he is required to write the application logic (code) and presentation logic (design) in the same file. He was required to mix the ASP code with the HTML code to get the desired result.
ASP.NET and the .NET Framework simplify development by separating the application logic and presentation logic making it easier to maintain the code. You write the design code (presentation logic) and the actual code (application logic) separately eliminating the need to mix HTML code with ASP code. ASP.NET can also handle the details of maintaining the state of the controls, such as contents in a textbox, between calls to the same ASP.NET page.
Another advantage of creating applications is debugging. Visual Studio .NET and other third party providers provide several debugging tools that simplify application development. The .NET Framework simplifies debugging with support for Runtime diagnostics. Runtime diagnostics helps you to track down bugs and also helps you to determine how well an application performs. The .NET Framework provides three types of Runtime diagnostics: Event Logging, Performance Counters and tracing.
220.127.116.11 Easy application deployment and maintenance
The .NET Framework makes it easy to deploy applications. In the most common form, to install an application, all you need to do is copy the application along with the components it requires into a directory on the target computer. The .NET Framework handles the details of locating and loading the components an application needs, even if several versions of the same application exist on the target computer. The .NET
Framework ensures that all the components the application depends on are available on the computer before the application begins to execute.
3.3.2 NET FRAMEWORK
The Microsoft .NET Framework is a software component that can be added to or is included with the Microsoft Windows operating system. It provides a large body of pre-coded solutions to common program requirements, and manages the execution of programs written specifically for the framework. The .NET Framework is a key Microsoft offering, and is intended to be used by most new applications created for the Windows platform.
The pre-coded solutions that form the framework's class library cover a large range of programming needs in areas including: user interface, data access, database connectivity, cryptography, web application development, numeric algorithms, and network communications. The functions of the class library are used by programmers who combine them with their own code to produce applications.
Programs written for the .NET Framework execute in a software environment that manages the program's runtime requirements. This runtime environment, which is also a part of the .NET Framework, is known as the Common Language Runtime (CLR). The CLR provides the appearance of an application virtual machine, so that programmers need not consider the capabilities of the specific CPU that will execute the program. The CLR also provides other important services such as security mechanisms, memory management, and exception handling. The class library and the CLR together compose the .NET Framework. The framework is intended to make it easier to develop computer applications and to reduce the vulnerability of applications and computers to security threats.
First released in 2002, it is included with Windows XP SP2, Windows Server 2003 and Windows Vista, and can be installed on most older versions of Windows.
Microsoft .NET Framework was designed with several intentions:
Â¢ Interoperability - Because interaction between new and older applications is commonly required, the .NET Framework provides means to access functionality that is implemented in programs that execute outside the .NET environment. Access to COM components is provided in the System.Runtime.InteropServices and System.EnterpriseServices namespaces of the framework, and access to other functionality is provided using the P/Invoke feature.
Â¢ Common Runtime Engine - Programming languages on the .NET Framework compile into an intermediate language known as the Common Intermediate Language, or CIL (formerly known as Microsoft Intermediate Language, or MSIL). In Microsoft's implementation, this intermediate language is not interpreted, but rather compiled in a manner known as just-in-time compilation (JIT) into native code. The combination of these concepts is called the Common Language Infrastructure (CLI), a specification; Microsoft's implementation of the CLI is known as the Common Language Runtime (CLR).
Â¢ Language Independence - The .NET Framework introduces a Common Type System, or CTS. The CTS specification defines all possible data types and programming constructs supported by the CLR and how they may or may not interact with each other. Because of this feature, the .NET Framework supports development in multiple programming languages. This is discussed in more detail in the .NET languages section below.
Â¢ Base Class Library - The Base Class Library (BCL), sometimes referred to as the Framework Class Library (FCL), is a library of types available to all languages using the .NET Framework. The BCL provides classes which encapsulate a number of common functions, including file reading and writing, graphic rendering, database interaction and XML document manipulation.
Â¢ Simplified Deployment - Installation of computer software must be carefully managed to ensure that it does not interfere with previously installed software, and that it conforms to increasingly stringent security requirements. The .NET framework includes design features and tools that help address these requirements.
Â¢ Security - .NET allows for code to be run with different trust levels without the use of a separate sandbox.
A design goal of the .NET Framework was to support platform independence. That is, a program written to use the framework should run without change on any type of computer for which the framework is implemented. However, Microsoft has only implemented the full .NET framework on the Windows operating system. Microsoft and others have implemented portions of the framework on non-Windows systems, but to date these implementations are neither complete nor widely used, so full cross-platform support has not been achieved.
3.4 INTRODUCTION TO SQL SERVER 2005
Microsoft SQL Server 2005 is comprehensive, integrated data management and analysis software that enables organizations to reliably manage mission-critical information and confidently run today's increasingly complex business applications. SQL Server 2005 allows companies to gain greater insight from their business information and achieve faster results for a competitive advantage. SQL Server 2005 is the Data Platform leader:
Â¢ SQL Server is the fastest growing Database and Business Intelligence vendor.
Â¢ SQL Server ships more units than Oracle and IBM combined.
Â¢ SQL Server is the #1 OLAP Server on the market.
Â¢ SQL Server is more secure than Oracle. Since July 2003 more than 100 critical Oracle database security vulnerabilities have been identified, compared to ZERO for SQL Server for that period.
Â¢ SQL Server is a benchmark leader, with the best price/performance for TPC-H 1TB & 3TB (non-clustered) as well as best performance for TPC-H 1TB.
Â¢ Gartner 2006 worldwide RDBMS market share reports highest growth rate in market share for Microsoft SQL Server. With 28% growth in market share, growth is almost twice the nearest competitor at 14.8% growth.
Â¢ SQL Server Manages the World's Largest Databases
The primary goal of the system analyst is to improve the efficiency of the existing system. For that the study of specification of the requirements is very essential. For the development of the new system, a preliminary survey of the existing system will be conducted. Investigation done whether the upgradation of the system into an application program could solve the problems and eradicate the inefficiency of the existing system.
4.1 FEASIBILITY STUDY
The initial investigation points to the question whether the project is feasible. A feasibility is conducted to identify the best system that meets the all the requirements. This includes an identification description, an valuation of the proposed systems and selection of the best system for the job. The requirements of the system are specified with a set of constraints such as system objectives and the description of the out puts. It is then duty of the analyst to evaluate the feasibility of the proposed system to generate the above results. Three key factors are to be considered during the feasibility study.
4.1.1 Operation Feasibility
An estimate should be made to determine how much effort and care will go into the developing of the system including the training to be given to the user. Usually, people are reluctant to changes that come in their progression. The computer initialization will certainly affected the turn over, transfer and employee job status. Hence an additional effort is to be made to train and educate the users on the new way of the system.
4.1.2 Technical Feasibility
The main consideration is to be given to the study of available resources of the organization where the software is to be implemented. Here the system analyst evaluates the technical merits of the system giving emphasis on the performance, Reliability, maintainability and productivity.
By taking the consideration before developing the proposed system, the resources availability of the organization was studied. The organization was immense computer facilities equipped with sophisticated machines and the software hence this technically feasible.
4.1.3 Economic Feasibility
Economic feasibility is the most important and frequently used method for evaluating the effectiveness of the proposed system. It is very essential because the main goal of the proposed system is to have economically better result along with increased efficiency. Cost benefit analysis is usually performed for this purpose. It is the comparative study of the cost verses the benefit and savings that are expected from the proposed system. Since the organization is well equipped with the required hard ware, the project was found to be economically.
5.1 HARDWARE REQUIREMENTS
: Pentium IV
: 512 MB RAM
: 80 GB Hard disk
5.2 SOFTWARE REQUIREMENTS
: Microsoft XP/VISTA/2003 server
: Visual Studio 2005
: Microsoft SQL Server 2005
Application Software : Microsoft Office 2003
5.3 SOFTWARE FEATUERS
5.3.1 LANGUAGES USED: C#
Visual C# .Net is designed to be a fast and easy way to create .NET applications, including Web services and ASP.NET Web applications. Applications written in Visual C# are built on the services of the common language runtime and take full advantage of the .NET Framework.
It is a simple, elegant, type-safe, object-oriented language recently developed by Microsoft for building a wide range of applications. Anyone familiar with C and similar languages will find few problems in adapting to C#. C# is designed to bring rapid development to the C++ programmer without sacrificing the power and control that are a hallmark of C and C++. Because of this heritage, C# has a high degree of fidelity with C and C++, and developers familiar with these languages can quickly become productive in C#. C# provides intrinsic code trust mechanisms for a high level of security, garbage collection, and type safety. C# supports single inheritance and creates Microsoft intermediate language (MSIL) as input to native code compilers.
It is fully integrated with the .NET Framework and the common language runtime, which together provide language interoperability, garbage collection, enhanced security, and improved versioning support. C# simplifies and modernizes some of the more complex aspects of C and C++, notably namespaces, classes,
enumerations, overloading, and structured exception handling. C# also eliminates C and C++ features such as macros, multiple inheritance, and virtual base classes. For current C++ developers, C# provides a powerful, high-productivity language alternative.
Visual C# provides prototypes of some common project types, including:
Â¢ Windows Application.
Â¢ Class Library.
Â¢ Windows Control Library.
Â¢ ASP.NET Web Application.
Â¢ ASP.NET Web Service.
Â¢ Web Control Library.
Â¢ Console Application.
Â¢ Windows Service.
CHAPTER 6 SYSTEM DESIGN
System design is the solution to the creation of a new system. This phase is composed of several systems. This phase focuses on the detailed implementation of the feasible system. It emphasis on translating design specifications to performance specification. System design has two phases of development logical and physical design.
During logical design phase the analyst describes inputs (sources), out puts (destinations), databases (data sores) and procedures (data flows) all in a format that meats the uses requirements. The analyst also specifies the user needs and at a level that virtually determines the information flow into and out of the system and the data resources. Here the logical design is done through data flow diagrams and database design.
The physical design is followed by physical design or coding. Physical design produces the working system by defining the design specifications, which tell the programmers exactly what the candidate system must do. The programmers write the necessary programs that accept input from the user, perform necessary processing on accepted data through call and produce the required report on a hard copy or display it on the screen.
6.1 LOGICAL DESIGN
Logical design of an information system shows the major features and also how they are related to one another. The first step of the system design is to design logical design elements. This is the most creative and challenging phase and important too. Design of proposed system produces the details of the state how the system will meet the requirements identified during the system analysis that is, in the design phase we have to find how to solve the difficulties faced by the existing system. The logical design of the proposed system should include the details that contain how the solutions can be implemented. It also specifies how the database is to be built for storing and retrieving data, what kind of reports are to be created and what are the inputs to be given to the system. The logical design includes input design, output design, and database design and physical design
6.2 INPUT DESIGN
The input design is the link between the information system and the user. It comprises the developing specification and procedures for data preparation and those steps are necessary to put transaction data into a usable form for processing data entry. The activity of putting data into the computer for processing can be achieved by inspecting the computer to read data from a written or printed document or it can occur by having people keying the data directly into the system. The design of input focuses on controlling the amount of input required, controlling errors, avoiding delay, avoiding extra steps and keeping the process simple.
The system needs the data regarding the asset items, depreciation rates, asset transfer, physical verification for various validation, checking, calculation and report generation.. The error raising method is also included in the software, which helps to raise error message while wrong entry of input is done. So in input design the following things are considered.
What data should be given as input
Â¢ How the data should be arranged or coded
Â¢ The dialogue to guide the operating personnel in providing input.
Â¢ Methods for preparing input validations and steps to follow when error occur
Â¢ The samples of screen layout are given in the appendix.
6.3 OUTPUT DESIGN
Computer output is the most important and direct information source to the user. Output design is a process that involves designing necessary outputs in the form of reports that should be given to the users according to the requirements. Efficient, intelligible output design should improve the system's relationship with the user and help in decision making. Since the reports are directing referred by the management for taking decisions and to draw conclusions they must be designed with almost care and the details in the reports must be simple, descriptive and clear to the user. So while designing output the following things are to be considered.
Â¢ Determine what information to present
Â¢ Arrange the presentation of information in an acceptable format
Â¢ Decide how to distribute the output to intended receipts
Depending on the nature and future use of output required, they can be displayed on the monitor for immediate need and for obtaining the hardcopy. The options for the output reports are given in the appendix.
6.4 PHYSICAL DESIGN
The process of developing the program software is referred to as physical design. We have to design the process by identifying reports and the other outputs the system will produce. Coding the program for each module with its logic is performed in this step. Proper software specification is also done in this step.
6.5 MODULAR DESIGN
A software system is always divided into several sub systems that makes it easier for the development. A software system that is structured into several subsystems makes it easy for the development and testing. The different subsystems are known as the modules and the process of dividing an entire system into subsystems is known as modularization or decomposition.
A system cannot be decomposed into several subsystems in any way. There must some logical barrier, which facilitates the separation of each module. The separation must be simple but yet must be effective so that the development is not affected.
The system under consideration has been divided into several modules taking in consideration the above-mentioned criteria. The different modules are
1.College and Department details
2. Login and subject
3. Student Details
4. Exam Details
6.6 DATABASE DESIGN
The overall objective in the development of database technology has been to treat data as an organizational resource and as an integrated whole. DBMS allow data to be protected and organized separately from other resources. Database is an integrated collection of data. The most significant form of data as seen by the programmers is data as stored on the direct access storage devices. This is the difference between logical and physical data.
Database files are the key source of information into the system. It is the process of designing database files, which are the key source of information to the system. The files should be properly designed and planned for collection, accumulation, editing and retrieving the required information.
The organization of data in database aims to achieve three major objectives: -
Â¢ Data integration.
Â¢ Data integrity.
Â¢ Data independence.
The proposed system stores the information relevant for processing in the MS SQL SERVER database. This database contains tables, where each table corresponds to one particular type of information. Each piece of information in table is called a field or column. A table also contains records, which is a set of fields. All records in a table have the same set of fields with different information. There are primary key fields that uniquely identify a record in a table. There are also fields that contain primary key from another table called foreign keys.
Normalization is a technique of separating redundant fields and braking up a large table in to a smaller one. It is also used to avoid insertion, deletion and updating anomalies. All the tables have been normalized up to the third normal form. In short the rules for each of the three normal forms are as below.
Â¢ First normal form
A relation is said to be in 1NF if all the under lying domain of attributes contain simple individual
Â¢ Second normal form
The 2NF is based on the concept of full functional dependency. A relation said to be in 2NF if and only if it is in 1NF and every non-key attribute is fully functionally dependent on candidate key of the table.
Â¢ Third normal form
The 3NF is based on the concept of transitive dependency. A relation in 2NF is said to be in 3NF if every non-key attribute is non-transitively.
The goal of the coding phase is to translate the design. The aim in this phase is to implement the design in the best possible manner. Well known code can reduce the testing and maintenance effort. During coding, the focus should on developing programs that are easy to read and understand and not simply on developing the programs that are easy to write. Simplicity and clarity should be strived for during the code phase. An important concept that help the understandability of the programs is structured programming. The program that should be organized as a sequence of statements and during execution of the statements is executed in the sequence given in the program. There are many different criteria for judging of the program, execution time and required memory.
CHAPTER 8 SYSTEM TESTING AND IMPLEMENTATION
8.1 SYSTEM TESTING
System testing is a critical aspect of Software Quality Assurance and represents the ultimate review of specification, design and coding. Testing is a process of executing a program with the intent of finding an error. A good test is one that has a probability of finding an as yet undiscovered error. The purpose of testing is to identify and correct bugs in the developed system. Nothing is complete without testing. Testing is the vital to the success of the system.
In the code testing the logic of the developed system is tested. For this every module of the program is executed to find an error. To perform specification test, the examination of the specifications stating what the program should do and how it should perform under various conditions.
Unit testing focuses first on the modules in the proposed system to locate errors. This enables to detect errors in the coding and logic that are contained within that module alone. Those resulting from the interaction between modules are initially avoided. In unit testing step each module has to be checked separately.
System testing does not test the software as a whole, but rather than integration of each module in the system. The primary concern is the compatibility of individual modules. One has to find areas where modules have been designed with different specifications of data lengths, type and data element name.
Testing and validation are the most important steps after the implementation of the developed system. The system testing is performed to ensure that there are no errors in the implemented system. The software must be executed several times in order to find out the errors in the different modules of the system.
Validation refers to the process of using the new software for the developed system in a live environment i.e., new software inside the organization, in order to find out the errors. The validation phase reveals the failures and the bugs in the developed system. It will be come to know about the practical difficulties the system faces when operated in the true environment. By testing the code of the implemented software, the logic of the program can be examined. A specification test is conducted to check whether the specifications stating the program are performing under various conditions. Apart from these tests, there are some special tests conducted which are given below:
Peak Load Tests: This determines whether the new system will handle the volume of activities when the system is at the peak of its processing demand. The test has revealed that the new software for the agency is capable of handling the demands at the peak time.
Storage Testing: This determines the capacity of the new system to store transaction data on a disk or on other files. The proposed software has the required storage space available, because of the use of a number of hard disks.
Performance Time Testing: This test determines the length of the time used by the system to process transaction data.
In this phase the software developed Testing is exercising the software to uncover errors and ensure the system meets defined requirements. Testing may be done at 4 levels
Â¢ Unit Level
Â¢ Module Level
Â¢ Integration & System
8.1.1 UNIT TESTING
A Unit corresponds to a screen /form in the package. Unit testing focuses on verification of the corresponding class or Screen. This testing includes testing of control paths, interfaces, local data structures, logical decisions, boundary conditions, and error handling. Unit testing may use Test Drivers, which are control programs to co-ordinate test case inputs and outputs, and Test stubs, which replace low-level modules. A stub is a dummy subprogram.
8.1.2 MODULE LEVEL TESTING
Module Testing is done using the test cases prepared earlier. Module is defined during the time of
8.1.3 INTEGRATION & SYSTEM TESTING
Integration testing is used to verify the combining of the software modules. Integration testing addresses the issues associated with the dual problems of verification and program construction. System testing is used to verify, whether the developed system meets the requirements. 8.1.4 REGRESSION TESTING
Each modification in software impacts unmodified areas, which results serious injuries to that software. So the process of re-testing for rectification of errors due to modification is known as regression testing.
Installation and Delivery:
Installation and Delivery is the process of delivering the developed and tested software to the customer. Refer the support procedures. Acceptance and Project Closure:
Acceptance is the part of the project by which the customer accepts the product. This will be done as per the Project Closure, once the customer accepts the product, closure of the project is started. This includes metrics collection, PCD, etc.
8.2 SYSTEM IMPLEMENTATION
Implementation includes all those activities that take place to convert from the old system to the new. The old system consists of manual operations, which is operated in a very different manner from the proposed new system. A proper implementation is essential to provide a reliable system to meet the requirements of the organizations. An improper installation may affect the success of the computerized
8.2.1 IMPLEMENTATION METHODS:
There are several methods for handling the implementation and the consequent conversion from the old to the new computerized system.
The most secure method for conversion from the old system to the new system is to run the old and new system in parallel. In this approach, a person may operate in the manual older processing system as well as start operating the new computerized system. This method offers high security, because even if there is a flaw in the computerized system, we can depend upon the manual system. However, the cost for maintaining two systems in parallel is very high. This outweighs its benefits.
Another commonly method is a direct cut over from the existing manual system to the computerized system. The change may be with in a week or with in a day. There are no parallel activities. However, there is no remedy in case of a problem. This strategy requires careful planning.
A working version of the system can also be implemented in one part of the organization and the personnel will be piloting the system and changes can be made as and when required. But this method is less preferable due to the loss of entirety of the system.
8.2.2 IMPLEMENTATION PLAN:
The implementation plan includes a description of all the activities that must occur to implement the new system and to put it into operation. It identifies the personnel responsible for the activities and prepares a time chart for implementing the system. The implementation plan consists of the following steps.
o List all files required for implementation.
o Identify all data required to build new files during the implementation.
o List all new documents and procedures that go into the new system.
The implementation plan should anticipate possible problems and must be able to deal with them. The usual problems may be missing documents; mixed data formats between current and files, errors in data translation, missing data etc.
The different modules, forms and tables in our system are displayed here. 9.1 DATA FLOW DIAGRAM
The following dataflow diagrams show the control flow in our system.
DATA BASE ACCES
Fig13.2 LEVEL 2 DFD
9.2 SCREEN SHOTS
9.2.1 College and Department details
It deals with the details of college and department.
Fig 1: College details
This form is used to enter the details of the college.
Fig 2: Department details
This form is used to enter the details about various courses.
9.1.2 Login and subject
It contains the details of login process and subject details. Login process include sign in sign up ,sign out, change password.
This form is used for sign up process.
Fig4: Sign in form
This form is used to sign in to the system
Fig5: Change password form
This form is used to change the password of users.
Fig5 :Subject form
This form is used to enter the details about different subjects of different departments and semesters.
9.1.3 Student Details
Fig6 and Fig7 are used to enter the personnel details of student.
This form is used enter different types
Fig9: Exam details
This form is used to enter marks got for various exams including its register number.
Fig11: Other details
This form is used to enter the achievements, disciplinary action taken and the month and year of under going course.
Fig12: Final report
This form is used to enter technical knowledge, about the lab record, his/her character any remarks.
The system has been developed with much care that it is free of errors and at the same time it is efficient and less time consuming. The important thing is that the system is robust. Avoid malfunction from outsiders .It goes through all phases of software development cycle. So product is accurate. Also provision is provided for future developments in the system.
The current application developed is in accordance with the request that has been provided by the organization. On regarding the future enhancement, the application can further expanded in accordance with changing scenario. Since the change in testing and user needs arises frequently in certain short intervals of time, the application can be further upgraded to meet the requirements that may arise in the far or near future. With regarding to the needs that arises, more and more features can be included by adding it as separate modules and integrate it with the existing system.
The .NET today is based on OOPs concept, whose main advantage is modularity, which helps us in adding the future needs as add-on modules to work with the main system which can be done effortlessly instead of rewriting or modifying the entire application. So the scope of future enhancement is absolutely clear with the concept that is incorporated in the today that was made used to build the application.
http://www.msdn.microsoft..com http://www.csharpcorner.com http://www.getdotnet.com http://www.google.com