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Free "Database Languages Quiz" App Download: Update authorization allows modification of data, but no; MCQ with answers: reading, insertion, retrieval, and deletion. Study Introduction to DBMS Questions and Answers, Apple iBook to download free chapter for database knowledge building.

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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

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