Database Management Systems Quiz

The main functions of a database administrator include managing user access, ensuring data security, monitoring performance, troubleshooting issues, and ensuring data integrity and availability.

Physical data independence refers to the ability to modify the physical storage structures without affecting the conceptual or external levels. Logical data independence refers to the ability to modify the conceptual schema without affecting the external schema or application programs.

1. Data redundancy: File-processing systems often suffer from data redundancy, while DBMS minimizes redundancy. 2. Data inconsistency: DBMS ensures data consistency, while file-processing systems may lead to inconsistent data. 3. Data security: DBMS provides better data security features compared to file-processing systems. 4. Data sharing: DBMS allows for easier data sharing among multiple users compared to file-processing systems.

<p>The architecture of a Database system typically consists of four components: 1. Internal level: Describes the physical storage structure and access paths. 2. Conceptual level: Describes the entire database structure. 3. External level: Describes the part of the database that is relevant to specific users. 4. Database management system (DBMS): Manages the database and provides access to the data.</p> Signup and view all the answers

<ol> <li>Requirement analysis 2. Conceptual database design 3. Logical database design 4. Physical database design 5. Implementation 6. Testing and evaluation</li> </ol> Signup and view all the answers