DBMS for Competitive Exams MCQs Test Online PDF Book Download

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MCQ on DBMS for Competitive Exams Quiz Book Download

MCQ: While an DDL operation acts on or refers to object, it is protected by

  1. Encapsulation
  2. Encryption
  3. Locking
  4. Views log

C

MCQ: Restricting data access and database activities is responsibility of

  1. Data concurrency control
  2. Data access control
  3. Data atomicity control
  4. Data integrity control

B

MCQ: Oracle Database acquires a DDL lock on behalf of?

  1. Explicit action
  2. Transaction
  3. Query
  4. Retrieval

B

MCQ: Definition of a schema object is protected through

  1. Data dictionary lock
  2. Data declaration lock
  3. Data definition lock
  4. Data administrator lock

A

MCQ: Data dictionary cache holds data in form of

  1. Blocks
  2. Buffers
  3. Rows
  4. Columns

C