Which two statements are true about the Key Exists validator? (Choose two.)

Question

Options

• Ait always issues a select to the database to ensure all data is up to date.
• Bit first checks the cache for match and then goes to the database only if necessary.
• Cit cannot validate any data changes that happened in the current transaction that have not yet
• Dit can validate any data changes that happened in the current transaction that have not yet been
• Eit can be used only with attributes that are defined as primary keys in the database.

• A
  6% (4)
• B
  79% (49)
• C
  3% (2)
• E
  11% (7)

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