FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -conceptual organization of the entire database as viewed by the database administrator. defines the portion of the database “seen” by the application programs that actually produce the desired information from the data contained within the database. enables the database administrator to define the schema components.

Detailed explanation-2: -A conceptual schema is a high-level description of informational needs underlying the design of a database. It typically includes only the main concepts and the main relationships among them. Typically this is a first-cut model, with insufficient detail to build an actual database.

Detailed explanation-3: -A database administrator, or DBA, is responsible for maintaining, securing, and operating databases and also ensures that data is correctly stored and retrieved. In addition, DBAs often work with developers to design and implement new features and troubleshoot any issues.

Detailed explanation-4: -A database administrator ensures the security of a database. A database administrator ensures integrity in the database, that is, they make sure that all the data stored in the database is not misplaced or mismatched. A database administrator works to see if the database is always available and accessible.