单选题What is true about sequences?（）AOnce created, a sequence belongs to a specific schema.BOnce created, a sequence is linked to a specific table.COnce created, a sequence is automatically available to all users.DOnly the DBA can control which sequence is used by a certain table.EOnce created, a sequence is automatically used in all INSERT and UPDATE statements.
单选题
What is true about sequences?（）
A
Once created, a sequence belongs to a specific schema.
B
Once created, a sequence is linked to a specific table.
C
Once created, a sequence is automatically available to all users.
D
Only the DBA can control which sequence is used by a certain table.
E
Once created, a sequence is automatically used in all INSERT and UPDATE statements.
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