Oracle
1Z0-419 · Question #65
1Z0-419 Question #65: Real Exam Question with Answer & Explanation
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Question
Which two statements are true about the Key Exists validator? (Choose two.)
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.
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