在Windows的资源管理器中,选定多个连续文件的方法是()。
A. 单击第一个文件,然后鼠标指向最后一个文件名,按住Tab键同时单击
B. 单击第一个文件,然后鼠标指向最后一个文件名,按住Ctrl键同时单击
C. 单击第一个文件,然后鼠标指向最后一个文件名,按住Alt键同时单击
D. 单击第一个文件,然后鼠标指向最后一个文件名,按住Shift键同时单击
In your multitenant container database (CDB) containing pluggable database (PDBs), the HR user executes the following commands to create and grant privileges on a procedure: CREATE OR REPLACE PROCEDURE create_test_v (v_emp_id NUMBER, v_ename VARCHAR2,v_SALARY NUMBER, v_dept_id NUMBER) BEGIN INSERT INTO hr.test VALUES (V_emp_id, V_ename, V_salary, V_dept_id); END; / GRANT EXECUTE ON CREATE_TEST TO john, jim, smith, king; How can you prevent users having the EXECUTE privilege on the CREATE_TEST procedure from inserting values into tables on which they do not have any privileges?()
A. Create the CREATE_TEST procedure with definer’s rights.
B. Grant the EXECUTE privilege to users with GRANT OPTION on the CREATE_TEST procedure.
Create the CREATE_TEST procedure with invoker’s rights.
D. Create the CREATE_TEST procedure as part of a package and grant users the EXECUTE privilege the package.