Day: June 23, 2021

DATABASE SECURITY This is a process of securing / Protecting a database from external threats which include: – ➢ Unauthorized access ➢ Unauthorized modification ➢ Unauthorized disclosures ➢ Destruction of data ➢ Loss of data though theft ➢ Loss of Read More …

DATABASE DEVELOPMENT LIFECYCLE 1. Data planning – in this stage an analysis of the current data processing method is conducted and the general business practices in order to justify the need for database management system (DBMS). 2. Requirement Specification – Read More …

Components of Database Systems DBMS have several components, each performing very significant tasks in the database management system environment. i. Software: This is the set of programs used to control and manage the overall database. This includes the DBMS software Read More …

LIMITATIONS OF DATABASE MANAGEMENT SYSTEMS i. Increased costs: one of the disadvantages of DBMS is Database systems require sophisticated hardware and software and highly skilled personnel. The cost of maintaining the hardware, software, and personnel required to operate and manage Read More …

DATABASE MANAGEMENT SYSTEM (DBMS) A database (DB): It is a collection of information that is organized so that it can be easily accessed, managed and updated. I.e. an organized collection of information or set of data that is required for Read More …

FILE STRUCTURE AND DATABASE MANAGEMENT SYSTEM Conventional / Traditional file structure / standard files – This is a file structure that maintains many different files and each file has a different format which is managed by a different application program. Read More …

COMPUTER FILE ORGANIZATION METHODS File organization refers to the way data is stored in a file. File organization is very important because it determines the method of access, efficiency, flexibility and storage devices to be used. There are four methods Read More …

FILE PROCESSING ACTIVITIES File processing – is the activity that is been passed through by data and files to become meaningful and accessible when needed. The principal guiding file processing in the computer system include: – File updating: The activity Read More …

FILES AND FILE STRUCTURE COMPUTER FILES A file is a collection of related records that give a complete set of information about a certain item or entity. A file can be stored manually in a file cabinet or electronically in Read More …

ATTRIBUTES THAT INFLUENCE THE QUALITY OF INFORMATION Quality of information refers to its fitness for use or its reliability. Some of the attributes of information which influence the quality of information are as follows: i. Timeliness: Timeliness means that information Read More …