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Oracle Certificate Profession 1Z0-051-01

原创 Oracle 作者:LuiseDalian 时间:2014-05-08 07:52:47 0 删除 编辑
(1)View the Exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTS, and TIMES tables.

The PROD_ID column is the foreign key in the SALES table, which references the PRODUCTS table.

Similarly, the CUST_ID and TIME_ID columns are also foreign keys in the SALES table referencing the CUSTOMERS and TIMES tables, respectively.

Evaluate the following CREATE TABLE command:

CREATE TABLE new_sales(prod_id, cust_id, order_date DEFAULT SYSDATE) AS SELECT prod_id, cust_id, time_id FROM sales;

Which statement is true regarding the above command?




A. The NEW_SALES table would not get created because the DEFAULT value cannot be specified in the column definition.

B. The NEW_SALES table would get created and all the NOT NULL constraints defined on the specified columns would be passed to the new table.

C. The NEW_SALES table would not get created because the column names in the CREATE TABLE command and the SELECT clause do not match.

D.The NEW_SALES table would get created and all the FOREIGN KEY constraints defined on the specified columns would be passed to the new table.




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