14-06-2013, 04:51 PM
Report on A Student Information System
Student Information.doc (Size: 3.7 MB / Downloads: 27)
INTRODUCTION
''A student information system'' (SIS) is a [[software application]] for education establishments to manage student data. Student information systems for entering student testa school, college or university. Also known as ''student information management system'' (SIMS), ''student records system'' (SRS), ''student management system'' (SMS), ''campus management system'' (CMS) or ''school management system'' (SMS).
The SIS is equivalent to an [[Enterprise Resource Planning]] or ERP system for a corporate customer. As such, many of the issues with [[ERP System Selection Methodology]], implementation, and operation of an ERP system apply to
Existing system with limitations:
In the existing system ,the data model entered will not store longer and it does not have security features.The stored student informationwill appear ,it shows wrong details and student information systems provide capabilities for entering student test.student schedules,trackings student and many student-related data needs in a school,college or university
SOFTWARE DEVELOPMENT METHODOLOGY
ANALYSIS:The requirements of the task to be performed, the next step is to analyze the problem and understand its context. The first activity in the phase is studying the existing system and other is to understand the requirements and domain of the new system. Both the activities are equally important, but the first activity serves as a basis of giving the functional specifications and then successful design of the proposed system. Understanding the properties and requirements of a new system is more difficult and requires creative thinking and understanding of existing running system is also difficult, improper understanding of present system can lead diversion from solution.
FEASIBILITY REPORT
Preliminary investigation examine project feasibility, the likelihood the system will be useful to the organization. The main objective of the feasibility study is to test the Technical, Operational and Economical feasibility for adding new modules and debugging old running system. All system is feasible if they are unlimited resources and infinite time. There are aspects in the feasibility study portion of the preliminary investigation:
• Technical Feasibility
• Operation Feasibility
• Economical Feasibility
Operational Feasibility:
Proposed projects are beneficial only if they can be turned out into information system. That will meet the organization’s operating requirements. Operational feasibility aspects of the project are to be taken as an important part of the project implementation. Some of the important issues raised are to test the operational feasibility of a project includes the following: -
• Is there sufficient support for the management from the users?
• Will the system be used and work properly if it is being developed and implemented?
• Will there be any resistance from the user that will undermine the possible application benefits?
This system is targeted to be in accordance with the above-mentioned issues. Beforehand, the management issues and user requirements have been taken into consideration. So there is no question of resistance from the users that can undermine the possible application benefits.
The well-planned design would ensure the optimal utilization of the computer resources and would help in the improvement of performance status.
Economic Feasibility:
A system can be developed technically and that will be used if installed must still be a good investment for the organization. In the economical feasibility, the development cost in creating the system is evaluated against the ultimate benefit derived from the new systems. Financial benefits must equal or exceed the costs.
The system is economically feasible. It does not require any addition hardware or software. Since the interface for this system is developed using the existing resources and technologies, there is nominal expenditure and economical feasibility.
JAVA AND HIGH PERFORMANCE
The reason why Java's portable solution is such a coup is that interpreted platforms have generally been very slow. Often their performance is so poor the systems based on interpreters have been unusable. Java's byte code system however, provides a "lean and mean" interpreted solution.
One of the key features that Java offers to improve performance is multithreading. Most interactive applications are characterized by large periods of time during which the user passes between actions to decide what to do next.
JAVA AND SECURITY
Unlike C++, Java does not support explicit pointer variables. Even without explicit pointer variables, is possible to access illegally if a byte code has been doctored appropriately. Java precludes this sort of security attack as well; the Java interpreter checks each byte code before interpreting it. There is still one loophole however, malefactor can modify the Java byte code interpreter to disable this byte code checking.
JAVA AND CONSTANTS
Java is pure object-oriented language. Thus, it does not support constants as such Instead, constants have to be defined as final variables within a class. It is some what confusing for a constant to be defend as a "variable".
Unlike C and C++, Java also does not support macros such as # define that can be used, in conjunction with a preprocessor, to declare the value of a constant. There is a good reason for this. Java applets are design to be independent programs loaded over the Internet. Java therefore does not support header files or other components that need to be available in conjunction with otherwise stand-alone programs.
JAVA AND OBJECT ORIENTATION
Java supports the five basic elements of Object-Oriented language, namely, classes, objects, inheritance, polymorphism, and dynamic binding. Java is a pure Object-Oriented language, it does not support the classical paradigm. Thus there are no functions or procedures, only methods or classes.
JAVA AND REUSABILITY
All Object-Oriented programming language supports reuse via inheritance of classes. In addition, mechanisms such as templates (in C++) and generics (in Adam) provide reuse at a higher level of abstraction. A template or generic is a module that is defined in terms of parameters. The generic is then instantiated for a particular set of parameters.
JAVA AND VISIBILITY
In Java, however, there are five types of access and the rules are more convoluted than in C++ because Java classes can be grouped into package of related classes, the simplest Visibility modifier is public, then it can be accessed from any where within the product. A protected attribute can be accessed by immediate derived classes. Private attribute cannot be accessed outside the class.
JAVA DATABASE CONNECTIVITY
The database is the most important component of a company's information services infrastructure. It is heart of the applications on which a company depends for its survival. Any programming language must be able to provide an application with access to these databases if it is to be considered a serious programming language.
The issues surrounding database access are often very difficult; other languages use either proprietary APIs specific to individual databases or complex universal APIs such as ODBC. Before starting any program the must be a need to used through data modeling and database design.