Tag: databases

Quizzes (243) Questions (4862)

Questions Related to databases

Multiple choice technology databases

You have a database that contains several FOREIGN KEY and CHECK constraints. Users are having problems with data entry on the database because the data they are adding is constantly in violation of the CHECK constraints. Corporate policy regarding database design prevents you from modifying the current constraints, so you decide to implement your changes via a trigger. Which types of triggers would be best suited for this task?

  1. UPDATE, DELETE, and INSERT TRiggers

  2. Just UPDATE and INSERT triggers

  3. INSTEAD OF TRiggers

  4. Triggers cannot be used in this circumstance.
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology databases

You have an accounting SQL Server database application that is accessed by 50 users on your company network. When a user inserts or updates a record, you want to make sure that all the required columns have appropriate values. Which of the following would be best for this situation?

  1. A stored procedure and a trigger

  2. A batch and a trigger

  3. An UPDATE TRigger and an INSERT trigger

  4. One trigger by itself
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation
Multiple choice technology databases

Which statement is valid when removing procedures?

  1. Use a drop procedure statement to drop a standalone procedure

  2. Use a drop procedure statement to drop a procedure that is part of a package.Then recompile the package specification

  3. Use a drop procedure statement to drop a procedure that is part of a package.Then recompile the package body

  4. For faster removal and re-creation, do not use a drop procedure statement. Instead, recompile the procedure using the alter procedure statement with the REUSE SETTINGS clause.
Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology databases

Examine this procedure: CREATE OR REPLACE PROCEDURE ADD_PLAYER (V_ID IN NUMBER, V_LAST_NAME VARCHAR2) IS BEGIN INSERT INTO PLAYER (ID, LAST_NAME) VALUES (V_ID, V_LAST_NAME); COMMIT; END; This procedure must invoke the UPD_BAT_STAT procedure and pass a parameter. Which statement, when added to the above procedure will successfully invoke the UPD_BAT_STAT procedure?

  1. EXECUTE UPD_BAT_STAT(V_ID);

  2. UPD_BAT_STAT(V_ID);

  3. RUN UPD_BAT_STAT(V_ID);

  4. START UPD_BAT_STAT(V_ID);
Reveal answer Fill a bubble to check yourself
B Correct answer
Full explanation
Multiple choice technology databases

Examine this procedure: CREATE OR REPLACE PROCEDURE INSERT_TEAM (V_ID in NUMBER, V_CITY in VARCHAR2 DEFAULT ‘AUSTIN’, V_NAME in VARCHAR2) IS BEGIN INSERT INTO TEAM (id, city, name) VALUES (v_id, v_city, v_name); COMMIT; END Which two statements will successfully invoke this procedure in SQL *Plus?

  1. EXECUTE INSERT_TEAM;

  2. EXECUTE INSERT_TEAM(3, V_NAME=>’LONGHORNS’, V_CITY=>’AUSTIN’);

  3. EXECUTE INSERT_TEAM(3, ‘AUSTIN’,’LONGHORNS’);

  4. EXECUTE INSERT_TEAM (V_ID := V_NAME := ‘LONGHORNS’, V_CITY :=‘AUSTIN’);
Reveal answer Fill a bubble to check yourself
B,C Correct answer
Full explanation
Multiple choice technology databases

Which two describe a stored procedure?

  1. A stored procedure is typically written in SQL.

  2. A stored procedure is a named PL/SQL block that can accept parameters

  3. A stored procedure is a type of PL/SQL subprogram that performs an action

  4. A stored procedure has three parts: the specification, the body, and the exception handler part

  5. The executable section of a stored procedure contains statements that assign values, control execution, and return values to the calling environment.
Reveal answer Fill a bubble to check yourself
B,C Correct answer
Full explanation
Multiple choice technology databases

What is true about stored procedures?

  1. A stored procedure uses the DECLARE keyword in the procedure specification to declare formal parameters

  2. A stored procedure is named PL/SQL block with at least one parameter declaration in the procedure specification

  3. A stored procedure must have at least one executable statement in the procedure body.

  4. A stored procedure uses the DECLARE keyword in the procedure body to declare formal
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology databases

Examine this code: CREATE OR REPLACE PROCEDURE insert_dept (p_location_id NUMBER) IS v_dept_id NUMBER(4); BEGIN INSERT INTO departments VALUES (5, ‘Education’, 150, p_location_id); SELECT department_id INTO v_dept_id FROM employees WHERE employee_id=99999; END insert_dept; / CREATE OR REPLACE PROCEDURE insert_location ( p_location_id NUMBER, p_city VARCHAR2) IS BEGIN INSERT INTO locations (location_id, city) VALUES (p_location_id, p_city); insert_dept(p_location_id); END insert_location; / You just created the departments, the locations, and the employees table. You did not insert any rows. Next you created both procedures. You now invoke the insert_location procedure using the following command: EXECUTE insert_location (19, ‘San Francisco’) What is the result in this EXECUTE command?

  1. The locations, departments, and employees tables are empty

  2. The departments table has one row. The locations and the employees tables are empty

  3. The location table has one row. The departments and the employees tables are empty.

  4. The locations table and the departments table both have one row. The employees table is empty.
Reveal answer Fill a bubble to check yourself
A Correct answer