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Database Systems Practice Test 345

Database Languages Quiz Questions and Answers PDF Download - 345

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Database Languages Questions and Answers PDF Download: MCQ 345

MCQ 1721:

Update authorization allows modification of data, but no

  1. Insertion
  2. Reading
  3. Deletion
  4. Retrieval
MCQ 1722:

The notation for finding the number of tuples in a relation, the aggregate function in SQL is

  1. count(*)
  2. count(@)
  3. count(%)
  4. count(?)
MCQ 1723:

Data model that uses a collection of basic objects, and the relationship among those objects, is known as

  1. Object-based Data model
  2. Entity relationship model
  3. Relational Model
  4. Semi-structured data model
MCQ 1724:

In SQL, dates specification by default is in the format

  1. mm/dd/yy
  2. yy/dd/mm
  3. yy/mm/dd
  4. dd/mm/yy
MCQ 1725:

At the end of the session, the program frees the statement handle and

  1. Disconnects from database
  2. Frees up connection
  3. Frees up SQL environment
  4. All of the Above

Database Systems Exam Prep Tests

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Database Languages App (Android & iOS)

Database Languages App (Android & iOS)

DataBase Management System (MCS) App (Android & iOS)

DataBase Management System (MCS) App (iOS & Android)

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Marine Pollution App (Android & iOS)

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Electronic Circuit Design App (iOS & Android)