Which of the following is handled by DBMS?
Correct answer: D. All of the above
- A. Data integrity
- B. Data security
- C. Data independence
- D. All of the above
Explanation
The correct answer is D. All of the above.A Database Management System (DBMS) plays a crucial role in managing data effectively. Here's how DBMS handles each of the aspects mentioned in the options:Data integrity: DBMS enforces data integrity by defining data types, constraints, and validation rules. This ensures data accuracy and consistency within the database.Data security: DBMS provides security features like access control, encryption, and auditing to protect data from unauthorized access, modification, or deletion.Data independence: DBMS allows modifying the database structure (tables, columns) without affecting applications (programs) that access the data. This is achieved through a layer of abstraction provided by the DBMS.Let's look at why the other options individually are also important functionalities of a DBMS:A. Data integrity is essential for maintaining reliable and trustworthy data in the database.B. Data security protects sensitive data from unauthorized access and potential breaches.C. Data independence simplifies database maintenance and reduces the impact of structural changes on applications.In conclusion, a DBMS plays an integral role in managing data integrity, security, and independence within a database system
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Databases cover tables, records, fields, keys and relationships, together with database management systems and relational database design. The subject includes primary and foreign keys, normalization, SQL commands such as SELECT, INSERT, UPDATE and DELETE, queries, forms and reports, while distinguishing a database from a spreadsheet used for simple tabular data.
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