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databases Online Quiz - 75

Description: databases Online Quiz - 75
Number of Questions: 20
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Tags: databases
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In which oracle verion scheduling concept is introduced ?

  1. Oracle 8

  2. Oracle 7

  3. Oracle 10g

  4. Oracle 9i

  5. None


Correct Option: A

what is the view that provides the job history ?

  1. all_scheduler_job_log_

  2. dba_scheduler_job_logs

  3. users_scheduler_job_log

  4. all the above

  5. None


Correct Option: E

Which package in plsql provides scheduling ?

  1. DBMS_SCHEDULER package

  2. DBMS_SCHEDULE package

  3. DBMS_JOB package

  4. Both A & C

  5. None


Correct Option: D

An existing sales catalog database structure exists on a system in your company. The company sells inventory from a single warehouse location that is across town from where the computer systems are located. The product table has been created with a nonclustered index, based on the product ID, which is also the primary key. Nonclustered indexes exist on the product category column and also the storage location column. Most of the reporting done is ordered by storage location. How would you change the existing index structure?

  1. Change the definition of the primary key so that it is a clustered index.

  2. Create a new clustered index, based on the combination of storage location and product category.

  3. Change the definition of the product category so that it is a clustered index.

  4. Change the definition of the storage location so that it is a clustered index.


Correct Option: D

You are designing an application that will provide data entry clerks the capability of updating the data in several tables. You would like to ease entry and provide common input so the clerks do not need to enter data into all fields or enter redundant values. What types of technologies could you use to minimize the amount of input needed? (Select all that apply.)

  1. Foreign key

  2. Cascading update

  3. Identity column

  4. Default

  5. NULL

  6. Unique index


Correct Option: B,C,D,E

You are the database developer for a leasing company. Your database includes a table that is defined as shown here: CREATE TABLE Lease (Id Int IDENTITY NOT NULL CONSTRAINT pk_lease_id PRIMARY KEY NONCLUSTERED, Lastname varchar(50) NOT NULL, FirstName varchar(50) NOT NULL, SSNo char(9) NOT NULL, Rating char(10) NULL, Limit money NULL) Each SSNo must be unique. You want the data to be physically stored in SSNo sequence. Which constraint should you add to the SSNo column on the Lease table?

  1. The UNIQUE CLUSTERED constraint

  2. The UNIQUE UNCLUSTERED constraint

  3. The PRIMARY KEY CLUSTERED constraint

  4. The PRIMARY KEY UNCLUSTERED constraint


Correct Option: A

You are preparing a new index on a table that has 1,500 rows. 10 rows are added to this table every day. The table already has a primary key, and the new index does not represent the order in which data in the table is to be stored. Updates to the table occur periodically but are infrequent. Which type of index would you create under this situation?

  1. Use a clustered index with a high FILLFACTOR setting

  2. Use a clustered index with a low FILLFACTOR setting

  3. Use a nonclustered index with a high FILLFACTOR setting

  4. Use a nonclustered index with a low FILLFACTOR setting


Correct Option: D

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


Correct Option: D
  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.


Correct Option: A
  1. USER_PROCEDURES

  2. USER_PROCS

  3. USER_OBJECTS

  4. USER_PLSQL_UNITS


Correct Option: C

Which type of argument passes a value from a procedure to the calling environment?

  1. VARCHAR2

  2. BOOLEAN

  3. OUT

  4. IN


Correct Option: C

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’);


Correct Option: B,C
  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.


Correct Option: B,C

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


Correct Option: C

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.


Correct Option: A
  1. There is no affect on procedure A and it runs successfully

  2. Procedure B is invalidated and recompiles when invoked.

  3. Procedure A is invalidated and recompiles for the first time it is invoked.

  4. Procedure A is invalidated and recompiles for the second time it is invoked


Correct Option: D
  1. A comma has been left after the STATS_EXIST_EXCEPTION exception.

  2. The STATS_EXIST_EXCEPTION has not been declared as a number

  3. The STATS_EXIST_EXCEPTION has not been declared as an exception

  4. Only predefined exceptions are allowed in the EXCEPTION section.


Correct Option: C
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