Oracle Updated 1z0-071 Exam Questions and Answers by yasmine

Regarding the provided SQL INTERSECT query:

D. 1 ROW: The INTERSECT operation will compare the two SELECT statements and return rows that are identical between them. Both queries are designed to return the same values ('1' for the ID, 'John' for the name, and NULL for the commission), hence one row that is identical between the two datasets will be returned.

Incorrect options:

A: Only one identical row exists between the two datasets.

B: There is an identical row; thus, it is not zero.

C: There is no error in the syntax or execution of the query.

The WITH GRANT OPTION clause in Oracle SQL allows the grantee to grant the privilege they have received to another user or role.

E. It cannot be used to pass on privileges to PUBLIC by the grantee: The WITH GRANT OPTION does not allow the grantee to pass on privileges to PUBLIC. Only the object's owner or a user with the GRANT ANY OBJECT PRIVILEGE system privilege can grant privileges to PUBLIC.

F. It can be used to pass on privileges to other users by the grantee: This is true. When a user receives privileges with the WITH GRANT OPTION, they can grant that privilege to another user or role.

References:

Oracle Database SQL Language Reference 12c, specifically sections on user privileges and the WITH GRANT OPTION.

C. True, when performing a self join, aliases are used to differentiate the same table in different contexts within the same query. This helps in comparing different rows within the same table as if they were in two separate tables.D. True, the ON clause can be used in self joins to specify the conditions on which the join is based. This is a standard method for specifying join conditions in SQL.F. True, a self join can be an outer join, allowing for the inclusion of rows that do not have a matching row in the same table according to the join condition. This enhances the flexibility of data analysis and reporting.

References:

Oracle documentation on joins: Oracle Database SQL Language Reference

Details on self joins and outer joins: Oracle Joins Tutorial

The SQL UPDATE statement is used to modify existing records in a table. In the given statement, there is a subquery that selects the JOB_ID and SALARY of EMPLOYEE_ID 200 and sets these values to the corresponding columns of EMPLOYEE_ID 100.

B. Employee 100 will have SALARY set to the same value as the SALARY of employee 200: This is true because the subquery selects the SALARY of employee 200 and the outer update statement sets this SALARY to employee 100.

C. Employee 100 will have JOB_ID set to the same value as the JOB_ID of employee 200: Similarly, the JOB_ID for employee 100 is updated to match the JOB_ID of employee 200 because of the subquery.

References:

Oracle Database SQL Language Reference 12c, particularly the section on the UPDATE statement and subqueries.