Tag: databases

Questions Related to databases

When creating store procedures and functions which construct allows you to transfer values to and from the calling environment?
technology databases

  1. Local variables.

  2. Arguments.

  3. Boolean variables.

  4. Substitution variables.

Show answer
Correct Option: B

Which type of argument passes a value from a calling environment?
technology databases

  1. VARCHAR2.

  2. BOOLEAN.

  3. OUT.

  4. IN.

Show answer
Correct Option: D

Under which situation do you create a server side procedure?
technology databases

  1. When the procedure contains no SQL statements.

  2. When the procedure contains no PL/SQL commands.

  3. When the procedure needs to be used by many client applications accessing several remote databases.

  4. When the procedure needs to be used by many users accessing the same schema objects on a local database.

Show answer
Correct Option: D

Examine this package body:CREATE OR REPLACE PACKAGE BODY forward_packISV_sum NUMBER;- 44 -PROCEDURE calc_ord(. . . );PROCEDURE generate_summary(. . . )ISBEGINCalc_ord(. . . );. . .END calc_ord;END forward_pack;/ Which construct has a forward declaration?
technology databases

  1. V_SUM

  2. CALC_ORD.

  3. FORWARD_PACK

  4. GENERATE_SUMMARY.

Show answer
Correct Option: B

Examine this procedure:CREATE OR REPLACE PROCEDURE ADD_PLAYER(V_ID IN NUMBER, V_LAST_NAME VARCHER2(30))ISBEGININSERT INTO PLAYER(ID, LAST_NAME)VALUES(V_ID, V_LAST_NAME);COMMIT;END; Why does this command fail when executed?
technology databases

  1. When declaring arguments length is not allowed.

  2. When declaring arguments each argument must have a mode specified.

  3. When declaring arguments each argument must have a length specified.

  4. When declaring a VARCHAR2 argument it must be specified.

Show answer
Correct Option: A

All users currently have the INSERT privileges on the PLAYER table. You want only your users to insert into this table using the ADD_PLAYER procedure. Which two actions must you take? (Choose two)
technology databases

  1. a) GRANT SELECT ON ADD_PLAYER TO PUBLIC;

  2. b) GRANT EXECUTE ON ADD_PLAYER TO PUBLIC;

  3. c) GRANT INSERT ON PLAYER TO PUBLIC;

  4. d) GRANT EXECUTE, INSERT ON ADD_PLAYER TO PUBLIC;

  5. e) REVOKE INSERT ON PLAYER FROM PUBLIC;

Show answer
Correct Option: B,E

The PROCEDURE_ADD_PRODUCT is defined within a package specifications as follows: PROCEDURE_ADD_PRODUCT (P_PRODNO NUMBER,P_PRODNAME VARCHER2); Which procedure declaration can’t be added to package specifications?

technology databases

  1. a) PROCEDURE add_product (p_order_date DATE);

  2. b) PROCEDURE add_product (p_name VARCHER2, P_ORDERED DATE);

  3. c) PROCEDURE add_product (p_prodname VARCHER2, P_PRISE NUMBER);

  4. d) PROCEDURE add_product (p_prize NUMBER, P_DESCRIPTION VARCHER2);

Show answer
Correct Option: D

Command to see the current user ?
technology databases

  1. show users;

  2. display user;

  3. show name;

  4. show user;

Show answer
Correct Option: D

Command to change SQL prompt name ?
technology databases

  1. SQL> set sqlprompt “Qwest > “

  2. SQL> set prompt “Qwest > “

  3. SQL> sqlprompt set “Qwest > “

  4. SQL> prompt “Qwest > “

Show answer
Correct Option: A

Command to switch to UNIX prompt ?
technology databases

  1. bye

  2. end

  3. host

  4. None of above

Show answer
Correct Option: C