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BT102 Past Papers Midterm
The previous section highlighted the file handling system environment and the main issues found there. The following section presents the benefits of database systems.
Advantages of databases Here it will be useful to repeat our definition of a database, that is, a database is shared the collection of logically related data designed to meet the information needs of many
of users in the organization.
A typical database system environment is shown in Figure 3 below:
Giant. 3: A typical database system environment
The figure shows various subsystems or applications in an educational institution, e.g library system, examination system and registration system.
They are separate, different application programs for each application or subsystem. However, data for all
applications are stored in the same place in the database and all application programs, the relevant data and users are managed by the DBMS. This is a typical database system environment and brings the following benefits: o Data sharing
Data for different applications or subsystems resides in the same place. This
represents the main advantage of data sharing.