问题：单选题View the Exhibit and examine the structure of the EMP table. You executed the following command to add a primary key to the EMP table： ALTER TABLE emp ADD CONSTRAINT emp_id_pk PRIMARY KEY （emp_id） USING INDEX emp_id_idx； Which statement is tru...
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问题：单选题Which statement is true regarding Flashback Version Query？ （）A It returns versions of rows only within a transaction.B It can be used in subqueries contained only in a SELECT statement.C It will return an error if the undo retention time is less tha...
问题：多选题Which three statements are true regarding single-row functions？（）AThey can accept only one argument.BThey can be nested up to only two levels.CThey can return multiple values of more than one data type.DThey can be used in SELECT， WHERE， and ORDER BY c...
问题：单选题Evaluate the following statement： Which statement is true regarding the evaluation of rows returned by the subquery in the INSERT statement？（）A They are evaluated by all the three WHEN clauses regardless of the results of the evaluation of any othe...
问题：多选题Which three possible values can be set for the TIME_ZONE session parameter by using the ALTER SESSION command？ （）AosBlocalC-8：00Ddbtimezone LiEAustralia...
问题：单选题EMPDET is an external table containing the columns EMPNO and ENAME. Which command would work in relation to the EMPDET table？（）A AB BC CD D...
问题：单选题Evaluate the following SQL statements that are issued in the given order： What would be the status of the foreign key EMP_MGR_FK？（）A It would be automatically enabled and deferred.B It would be automatically enabled and immediate.C It would rema...
问题：单选题The details of the order ID， order date， order total， and customer ID are obtained from the ORDERS table. If the order value is more than 30000， the details have to be added to the LARGEjDRDERS table. The order ID， order date， and order total should be...
问题：单选题View the Exhibit and examine the structure of the ORDERS table. Which task would require subqueries？ （）A displaying the total order value for sales representatives 161 and 163B displaying the order total for sales representative 161 in the year 19...
问题：单选题View the Exhibit and examine the details of the EMPLOYEES table. The query was written to format the PHONE_NUMBER for the employees. Which option would be the correct format in the output？（）A xxx-xxx-xxxxB （xxx） xxxxxxxC （xxx） xxx-xxxxD xxx-...
问题：多选题Which three possible values can be set for the TIME_ZONE session parameter by using the ALTER SESSION command？（）A’os’BlocalC-8：00’Ddbtimezone LiE’Australia’...
问题：单选题Evaluate the following SQL statements that are issued in the given order： What would be the status of the foreign key EMP_MGR_FK？（）A It would be automatically enabled and deferred.B It would be automatically enabled and immediate.C It would remai...
问题：单选题EMPDET is an external table containing the columns EMPNO and ENAME. Which command would work in relation to the EMPDET table？ （）A AB BC CD D...
问题：单选题View the Exhibit and examine the data in ORDERS_MASTER and MONTHLYjDRDERS tables. What would be the outcome of the above statement？（）A The ORDERS_MASTER table would contain the ORDERJDs 1 and 2.B The ORDERS_MASTER table would contain the ORDERJDs 1...
问题：多选题Which statements are correct regarding indexes？ （）AWhen a table is dropped， the corresponding indexes are automatically dropped.BFor each DML operation performed， the corresponding indexes are automatically updated.CIndexes should be created on columns...
