Computer Knowledge

Database Management Systems

5,344 Questions

Database Management Systems (DBMS) form the core framework for data storage, retrieval, and security in modern software applications. Concepts such as the E-R model, backup planning, SQL integration, and big data architecture are essential for computer knowledge sections. This hub offers a comprehensive set of practice questions to master DBMS fundamentals and advanced database operations.

E-R Model ConceptsBackup and RecoverySQL Server UpgradesJDBC and ODBCBig Data CharacteristicsData VirtualizationOracle Database

Database Management Systems Questions

Multiple choice
  1. Page Table

  2. Segmentation

  3. Overlays

  4. Write-ahead logging

  5. Semaphores

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is a recovery mechanism which must ensure that the before image (BFIM) of the data item is recorded in the appropriate log entry, and that the log entry is flushed to disk before the BFIM is overwritten with the after image (AFIM) in the database on disk.

Multiple choice
  1. Authorisation and Integrity manager

  2. File manager

  3. Buffer manager

  4. Transaction manager

  5. Area manager

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This data storage component in DBMS ensures that the database remains in a consistent state despite system failures and that concurrent transaction executions proceed without conflicting.