A、A. Once created, a sequence belongs to a specific schema.
B、B. Once created, a sequence is linked to a specific table.
C、C. Once created, a sequence is automatically available to all users.
D、D. Only the DBA can control which sequence is used by a certain table.
E、E. Once created, a sequence is automatically used in all INSERT and UPDATE statements.
更多“What is true about sequences? （）”相关的问题
A、A.true true B、B.false true C、C.true false D、D.false false E、E.Compilation fails. F、F. An exception is thrown at runtime.
A、A. The DESCRIBE DEPT statement displays the structure of the DEPT table. B、B. The ROLLBACK statement frees the storage space occupies by the DEPT table. C、C. The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist. D、D. The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.
A、A.true true B、B.false true C、C.true false D、D.false false
A、The value of Britain.s exports of goods usually exceeds the value of its imports. B、The value of Britain.s imports of goods usually exceeds the value of its exports. C、Manufactured goods now account for about 85%of British imports and about 80%of its exports. D、Most of the United Kingdom.s trade is with other developed countries,especially other members of the European Union.
A、The start value of the sequence is always 1. B、A sequence always increments by 1. C、The minimum value of an ascending sequence defaults to 1. D、The maximum value of descending sequence defaults to 1.
A、The start value of the sequence is always 1. B、A sequence always increments by 1. C、The minimum value of an ascending sequence defaults to 1. D、The maximum value of descending sequence defaults to 1.
A、Result Type is optional. B、Result Type is mandatory. C、Result Type can be changed after it is assigned to the function activity. D、Result Type should belong to the same item type as the function activity
A、Only configured on the egress router B、Only configured on the ingress router C、Is pre-signalled to reduce packet loss D、Must intersect the primary LSP at two locations
A、A. It is loaded with the FIXED status. B、B. It is loaded with the ACCEPTED status. C、C. It is not loaded with the ENABLED status. D、D.It is not loaded with the ACCEPTED status.
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