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全部博文(487)
发布时间:2019-03-05 13:07:19
Which two statements are true regarding the USING and ON clauses in table joins?B) A maximum of one pair of columns can be joined between two tables using the ON clause.D) The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause.........【阅读全文】
发布时间:2019-03-05 11:32:05
Examine the structure of the BOORSTRANSACTIONS table:Examine the SQL statement:MEMBER_ID IN ('A101', 'A102');A) It displays details only for members who have borrowed before today with RM as TRANSACTION_TYPE.C) It displays details for members who have borrowed before today with RM .........【阅读全文】
发布时间:2019-03-05 10:17:29
Examine the structure of the DEPARTMENTS tableYou execute the following command:SET UNUSED (country);A) A new column, COUNTRY, can be added to the DEPARTMENTS table after executing the command.C) Unique key constraints defined on the COUNTRY column are removed.E) Views created .........【阅读全文】
发布时间:2019-03-04 14:35:16
You need to create a table with the following column specifications:2. Employee Name (character data type) that stores the employee name4. Status (character data type), that contains the value 'ACTIVE' if no data is enteredWhich is the correct syntax to create this table?(emp_id NU.........【阅读全文】
发布时间:2019-03-04 13:58:40
Which statement is true regarding the SESSION_PRIVS dictionary view?B) It contains the system privileges granted to other users by the current user session.D) It contains the current object privileges available in the user session.(解析:SESSION_PRIVS 查看的是该当前会话所有的系统权限。.........【阅读全文】