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80、View the exhibit and examine the structure in ORDERS and ORDER_ITEMS tables. You need to create a view that displays the ORDER_ID, ORDER_DATE, and 阅读全文
posted @ 2019-03-18 14:19
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79、Which statement is true about transactions? A. A set of Data Manipulation Language (DML) statements executed in a sequence ending with a SAVEPOINT 阅读全文
posted @ 2019-03-18 13:40
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78、View the exhibit and examine the structure of the CUSTOMERStable. Which two tasks would require subqueries or joins to be executed in a single stat 阅读全文
posted @ 2019-03-18 10:56
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77、Which two statements are true about sequences created in a single instance database? (Choose two.) A. When the MAXVALUElimit for the sequence is re 阅读全文
posted @ 2019-03-18 10:10
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