DBMS for Competitive Exams MCQs Quiz Online PDF Download

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Database management system practice test MCQ: while an ddl operation acts on or refers to object, it is protected by with choices encapsulation, encryption, locking and views log for online eLearning for free hiring tests, pre-employment exams and job assessment test with answer keys. Free study guide is for online learning dbms for competitive exams quiz with MCQs to practice test questions with answers.

MCQs on DBMS for Competitive Exams Quiz PDF 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


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


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

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


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


MCQ. Data dictionary cache holds data in form of

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