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发布时间:2019-10-28 16:57:13

Which two statements are true about the WHERE and HAVING clouses in a SELECT statement?B) WHERE and HAVING clauses can be used In the same statement only if applied to dfferent table columns.D) Aggregating functions and columns used in HAVING clauses must be spectfied in thes SELECT list o.........【阅读全文】

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发布时间:2019-10-28 16:19:47

Examine this business rule:You must desion an Entity Relationsep (ER) model for optional data storage and allow generating reports in this format:Which two statements are true?B) The ER must have a many-to-many relationship between the STUDENTS and PROJECTS entities that must be resolv.........【阅读全文】

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发布时间:2019-10-25 14:59:53

Examine this partial command:cust_id NUMBER(2),)Which two clauses are required for this command to execute successfully?B) the REJECT LIMIT clauseD) the ACCESS PARAMETERS clauseAnswer:AD......【阅读全文】

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发布时间:2019-10-25 14:13:42

Examine the description of the PRODUCTS table:-----------------------------------------------------------------PRODUCT_NANE                     VARCHAR2(10)PURCHARGE                  &nb.........【阅读全文】

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发布时间:2019-10-23 15:34:54

Examine this SQL statement:SET customer_name =FROM customersWhich two are true?B) All existing rows in the ORDERS table are updated.D) The UPDATE statement executes successfully even if the subquery selects multiple rows.Answer:BD关联子查询:2、 然后子查询返回的结.........【阅读全文】

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