Design and Implement a Computerized System for File Sharing and Access Control
CHAPTER ONE
OBJECTIVE OF THE STUDY
The primary objective of this study is to design and implement a computerized system for file sharing and access control. This will help greatly to eradicate the inherent problems encountered by the administrative. It will also promote an protect the confidentiality, integrity and availability of information and resources.
CHAPTER TWO
LITERATURE REVIEW
INTRODUCTION
File is a block of arbitrary information or resource for storing information which is available to a computer program and is usually based on some kind of durable storage. A file is durable in the sense that it remains available for programs to use after the current program has finished. Computer files can be considered as the modern counterpart of paper document which traditionally were kept in offices and libraries files which are the source of the term.
The data stored in files is always entered in an organized manner. Records may be store alphabetically by name, by date or by the sequence in which they are received. One field in the records is the organizing factor for the file. This field which is used to determine the order of the file is called record key or key field.
TYPES OF FILE
MASTER FILE: This is the main file for an application; it is a large file for a fairly permanent nature e.g. customer ledger, payroll, inventory etc. A feature to note is the regular updating of these files to show a current position. For example customer’s orders will be processed increasing the balance owing figure on a customer ledger record and updating of students records. It is seen therefore that master records will contain data of a static nature.
TRANSACTION FILE: This is also known as movement file. This is a temporary file used to store data which will be used to update the master file. It is made up of the various transactions created from the source documents. As soon as it has been used for this purpose (updating), it is no longer required. It will therefore have a very short life because it will be replaced by a file containing the next batch of orders.
REFERENCE FILE: This is a file with a reasonable amount of permanency. Examples of data used for reference purposes are price list, tables of rate of payment, registrations numbers, names and addresses.
FILE ORGANIZATION
This is the arrangement of records within a database. It refers to the way in which records are held on a file with a view to the retrieval of data/information. We start from the point where the individual physical record layout has been already designed i.e. the file structure has already been decided. How do we organize our many hundreds or even thousands of such records (e.g. student’s record) on disk. Operating system supports three types of file organization. These are sequential, serial and random file organization.
CHAPTER THREE
SYSTEM ANALYSIS AND DESIGN
INTRODUCTION
The lexicon universal encyclopedia defined system as a set of concept or special method or procedure that must work together to perform a particular function. It is the method of determining how best to use computers and other resources to perform tasks which meet the information needs of an organization. Alternatively system is an entity which consist of independent work force put together to achieve a particular objective.
The exams and records department of the federal polytechnic Nekede is a system, hence it’s need analysis and design due to the constrain and set backs enhancement in this system. In this regards, control has to be exceeded because unpredictable disturbance my arises and ender the system.
System analysis and design are stages in the process of driven methodology SDLC (system development life circle) in which facts are obtained about the working methods bottlenecks and inefficiency. The methodology will evidently change the existing system into a new system through the stages.
CHAPTER FOUR
SYSTEM IMPLEMENTATION AND DOCUMENTATION
INTRODUCTION
System implementation includes hardware acquisition, software installation and testing of the system. It refers to the activities that take place as the new computer based system takes over from the manual filling system. During implementation careful plan are set p to ensure that that the new system operates quite smoothly. It equally involves training staff properly to follow the new procedures.
CODING
The coding of the design is the highest level of details on any software development. The coding is achieved using php programming language and mysqI database.
CHAPTER FIVE
SUMMARY
The major reason why a computer is employed into various activities is to solve problem, whether simple or complex. The computer solves problem when it is programmed to do so.
However, the employment of computer into the exams and records department of federal polytechnic Nekede will enhances and improves the administrative function and qualities of work. Prior to this fact, this will help the department to have a feasible system and maintain a very effective and efficient file system and access control.
RECOMMENDATION
The following recommendations are necessary for effective operation of exams and records:
- Federal polytechnic Nekede should equip their computer room with air conditioner to enhance effective performance of the computer system.
- The system is recommended for any information system that should want to go computerized
- Staff to handle the system should undergo some extensive training to make for efficiency and letter work performance so as to capture the facilities provided for by the system to achieve desired purposes.
- There should be a database administrator who will over see all the systems and make sure access is denied to unauthorized user.
CONCLUSION
This project work took a lot of time to visualize and explore the concept of record keeping. Not only do exams and records department allow for the collection of vast amount of students data, they work force. Where in the past, students recads had to be manually processed for filling and analysis. It can be entered quickly and easily into a computer system which allows for faster decision making and quicker reflexes for federal polytechnic Nekede as a whole.
BIBLIOGRAPHY
- Abdulahi, J.I (2004), Introduction to Computer a Management Tool Nigeria: Victory Publishers.
- Abdulahi, J.I (2001) Introduction to Computer Studies and Basic Programming: Mantle Publishers.
- French CS, (1972); Computer Science, 4th Edition, London: DP Publication Ltd.
- Mills, A.P (1984) Computer Information System Development: Analysis and Design, South – Western Publishing Co, USA.
- Oparah, C.C (2003) Genesis of Computer Science Nigeria; Pradces Books & Press.
- Onyedepo Nwachachu V. (2004) Lecture Notes On File Organization and Management (Unpublished).
