Tag: technology

Questions Related to technology

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

  1. a) When declaring arguments length is not allowed.

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

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

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

Show answer
Correct Option: A

The ADD_PLAYER, UPD_PLAYER_STAT and UPD_PITCHER_STAT procedures are grouped together in a package. A variable must be shared among only these procedures. Where should you declare this variable?
technology databases

  1. a) In the package body.

  2. b) In the data base triggers.

  3. c) In the package specification.

  4. d) In the procedures declare section using the exact name in each.

Show answer
Correct Option: A

When using a packaged function in a query, what is true?
technology databases

  1. a) The COMMIT and ROLLBACK commands are allowed in the packaged function.

  2. b) You can not use packaged functions in a query statement.

  3. c) The packaged function cannot execute an INSERT, UPDATE, or DELETE statement against the table that is being queried.

  4. d) The packaged function can execute and INSERT, UPDATE, or DELETE statement against the table that is being queried if it is used in a subquery.

  5. e) The packaged function can execute an INSERT, UPDATEM or DELETE statement against the table that is being queried if the pragma RESTRICT REFERENCE is used.

Show answer
Correct Option: C

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

  1. a) V_SUM

  2. b) CALC_ORD.

  3. c) FORWARD_PACK

  4. d) GENERATE_SUMMARY.

Show answer
Correct Option: B

Examine this package body: CREATE OR REPLACE PACKAGE BODY forward_pack IS V_sum NUMBER; - 44 - PROCEDURE calc_ord(. . . ); PROCEDURE generate_summary(. . . ) IS BEGIN Calc_ord(. . . ); . . . END calc_ord; END forward_pack; / Which construct has a forward declaration?
technology programming languages

  1. a) V_SUM

  2. b) CALC_ORD.

  3. c) FORWARD_PACK

  4. d) GENERATE_SUMMARY.

Show answer
Correct Option: B

Which of the following is not a java keyword?

technology programming languages

  1. assert

  2. interface

  3. extend

  4. transient

Show answer
Correct Option: C

AI Explanation

To answer this question, we need to understand the concept of Java keywords.

Java keywords are reserved words that have specific meanings and purposes in the Java programming language. These keywords cannot be used as identifiers (such as variable names, class names, or method names) because they are already predefined in the language.

Let's go through each option to understand why it is correct or incorrect:

Option A) assert - This option is incorrect because "assert" is a Java keyword used for assertions in the code.

Option B) interface - This option is incorrect because "interface" is a Java keyword used to define an interface, which is a collection of abstract methods.

Option C) extend - This option is correct because "extend" is not a Java keyword. "extend" is used in Java to create a subclass and inherit properties and methods from a superclass, but it is not a reserved keyword.

Option D) transient - This option is incorrect because "transient" is a Java keyword used to indicate that a variable should not be serialized during object serialization.

The correct answer is Option C) extend. This option is correct because "extend" is not a Java keyword.

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

  1. a) When declaring arguments length is not allowed.

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

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

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

Show answer
Correct Option: A

The Command "w" is used to
technology

  1. Tells you who's logged in, and what they're doing

  2. Tells you when the user last logged

  3. Lets you change your password

  4. None of the above

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Correct Option: A

How do you handle an Exception?
technology databases

  1. a) Trap it with a Handler

  2. b) Propagate it to the Calling Environment

  3. c) a & then b

  4. d) b & then a

Show answer
Correct Option: C