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The MCQ: Not Exists construct is used to test in a relation for the; "Database Systems Quiz" App Download [Free] with answers: existence of attributes, existence of tuples, non-existence of attributes, and non-existence of tuples for applied computer science. Learn Introduction to SQL Questions and Answers, Apple iBook to download free chapter for online SQL certification courses.

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MCQ 1421: The Not Exists construct is used to test in a relation for the:

  1. Existence of tuples
  2. Existence of attributes
  3. Non-existence of tuples
  4. Non-existence of attributes

MCQ 1422: For grouping the attributes to form various tables, the second way is to use:

  1. Algorithms
  2. Functions
  3. Relational model
  4. Entity relationship model

MCQ 1423: We can drop attributes from a relation by the command:

  1. alter table r drop A;
  2. alter table r delete A;
  3. modify table r delete A; alter table r drop A;
  4. alter table r drop A;

MCQ 1424: Values of one type of data can be converted to another domain using the type conversion:

  1. Define
  2. Modify
  3. Alter
  4. Cast

MCQ 1425: Oracle and IBM DB2 allow Java functions to run as part of the database:

  1. Procedure
  2. Product
  3. Process
  4. Program

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