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32.choose the best answer View the Exhibit and examine the data in EMP and DEPT tables. In the DEPT table, DEPTNO is the PRIMARY KEY. In the EMP table 阅读全文
posted @ 2019-02-22 13:25
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31.choose the best answer Which statement is true regarding the USING clause in table joins? A) It can be used to access data from tables through equi 阅读全文
posted @ 2019-02-22 10:58
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30.choose the best answer Examine the commands used to create DEPARTMENT_DETAILS and COURSE_DETAILS: SQL> CREATE TABLE DEPARTMENT_DETAILS (DEPARTMENT_ 阅读全文
posted @ 2019-02-22 10:27
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29.choose the best answer Evaluate the following query: SQL> SELECT promo_name || q'{'s start date was \}' || promo_begin_date AS "Promotion Launches" 阅读全文
posted @ 2019-02-22 09:56
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