Oracle Database SQL 12c 1z0-071 Exam Practice Test 4

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Question : 30 of 57

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Which three statements are true about sequences in a single instance Oracle database? (Choose three.)

A sequence can issue duplicate values
A sequence’s unallocated cached value are lost if the instance shuts down
Sequences can always have gaps
Two or more tables cannot have keys generated from the same sequence
A sequence can only be dropped by a DBA
A sequence number that was allocated can be rolled back if a transaction fails

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