Database Management System (DBMS)

21. In database records are called:

  1. Attributes
  2. Entity
  3. Tuples
  4. Relations

Correct answer: (C)
Tuples

22. An entity has a set of ___________ that describe it.

  1. Attributes
  2. Entity
  3. Tuples
  4. Relations

Correct answer: (A)
Attributes

23. In ER model rectangle represents:

  1. Attributes
  2. Entity set
  3. Relationships
  4. None of these

Correct answer: (B)
Entity set

24. Date is the type of attribute:

  1. Simple
  2. Composite
  3. Single values
  4. Multi valued

Correct answer: (B)
Composite

25. ___________ is the attribute or group of attributes that uniquely identify occurrence of each entity.

  1. Foreign key
  2. Super Key
  3. Primary Key
  4. All of these

Correct answer: (C)
Primary Key

26. ___________ is the real world object, such as a person, place etc.

  1. Attribute
  2. Entity
  3. Records
  4. All of these

Correct answer: (B)
Entity

27. Grant and revoke is the type of command:

  1. DDL
  2. DML
  3. DCL
  4. DQL

Correct answer: (C)
DCL

28. A user that manages the files of application in DBMS is called:

  1. Administrator
  2. Database analyst
  3. File Manager
  4. None of these

Correct answer: (C)
File Manager

29. ___________ is the information about data.

  1. Data
  2. Meta-Data
  3. Entity
  4. Relations

Correct answer: (B)
Meta-Data

30. DBA stands for:

  1. Database associated
  2. Database administrator
  3. Database application
  4. None of these

Correct answer: (B)
Database administrator

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