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MCQ 1966: The special character % is used to match:

  1. An alphabet only
  2. A number only
  3. Substring
  4. String

MCQ 1967: A relation schema is a set of attributes, but not all sets of attributes are:

  1. Schemas
  2. Relationship sets
  3. Domain
  4. Multi-leveled

MCQ 1968: The local date and time without time zone is returned with the method:

  1. timestamp.current
  2. current.timestamp
  3. localtimestamp
  4. system.localtimestamp

MCQ 1969: The type of constraint that relates to more than one lower-level entity set within a single generalization, is said to be:

  1. System-defined
  2. Condition-defined
  3. Data-defined
  4. User-defined

MCQ 1970: If the argument subquery contains no duplicate tuples, the unique construct returns:

  1. TRUE
  2. False
  3. Unknown
  4. Exists

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