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Download "What is Database System MCQ" App (iOS & Android): Different users can have access to the same data, possibly even at the same time, is known as; MCQ with answers: current access, shared-time access, concurrent access, and real-time access. Practice Overview of Database Management Questions and Answers, Google Book to download free chapter to manage online assignments.

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MCQ 1726: Different users can have access to the same data, possibly even at the same time, is known as:

  1. Shared-time access
  2. Current access
  3. Real-time access
  4. Concurrent access

MCQ 1727: A query expression in the tuple relational calculus is done as:

  1. {p| P(t)}
  2. {p| t(p)}
  3. {t| P(t)}
  4. {p| t(t)}

MCQ 1728: The database system before reading or modifying actual data, consults the:

  1. Physical level
  2. Model
  3. Data dictionary
  4. View level

MCQ 1729: The external language procedures need to deal with null values in:

  1. In parameters
  2. Out parameters
  3. Exit parameters
  4. Both A and B

MCQ 1730: The final result of the delete would depend on the order in which the tuples are:

  1. Stored
  2. Retrieved
  3. Processed
  4. Tested

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