Oracle Oracle Database 1Z0-144 Questions & Answers

• Question 101:

  Which two tasks should be created as functions instead of as procedures? (Choose two.)

  A. Reference host or bind variables in a PL/SQL block of code

  B. Tasks that compute and return multiple values to the calling environment

  C. Tasks that compute a value that must be returned to the calling environment

  D. Tasks performed in SQL that increase data independence by processing complex data analysis within the Oracle server, rather than by retrieving the data into an application

  Correct Answer: CD

• Question 102:

  View Exhibit 1 and examine the structure of the EMPLOYEES table.

  

  View Exhibit 2 and examine the code.

  

  What would be the outcome when the code is executed?

  A. It executes successfully.

  B. It gives an error because the SAL variable is not visible in the INCREASE function.

  C. It gives an error because the INCREASE function cannot be called from the RAISE_SALARY procedure.

  D. It gives an error because the INCREASE function and the RAISE_SALARY procedure should be declared at the beginning of the DECLARE section before all the other declarations.

  Correct Answer: A

• Question 103:

  What is the correct definition of the persistent state of a packaged variable?

  A. It is a private variable defined in a procedure or function within a package body whose value is consistent within a user session.

  B. It is a public variable in a package specification whose value is consistent within a user session.

  C. It is a private variable in a package body whose value is consistent across all current active sessions.

  D. It is a public variable in a package specification whose value is always consistent across all current active sessions.

  Correct Answer: B

• Question 104:

  View the Exhibit to examine the PL/SQL code:

  

  DECLARE x NUMBER := 5; y NUMBER := NULL; BEGIN IF x != y THEN -- yields NULL, not TRUE DBMS_OUTPUT.PUT_LINE(`x != y'); -- not run ELSIF x = y THEN -- also yields NULL DBMS_OUTPUT.PUT_LINE(`x = y'); ELSE DBMS_OUTPUT.PUT_LINE (`Can't tell if x and y are equal or not.'); END IF; END; /

  SERVEROUTPUT is on for the session. Which statement is true about the output of the PL/SQL block?

  A. The output is x = y.

  B. It produces an error.

  C. The output is x != y.

  D. The output is Can't tell if x and y are equal or not.

  Correct Answer: D

• Question 105:

  Examine the following command:

  SQL>ALTER SESSION SET plsql_warnings * 'enable: severe', 'enable: performance', 'ERROR: 05003';

  What is the implication of the above command?

  A. It issues a warning whenever ERROR: 05003 occur during compilation.

  B. It causes the compilation to fail whenever the warning ERROR.05003 occurs.

  C. It issues warnings whenever the code causes an unexpected action or wrong results performance problems.

  D. It causes the compilation to fail whenever the code gives wrong results or contains statements that are never executed.

  Correct Answer: B

• Question 106:

  View the exhibit and examine the structure of the products table.

  

  Examine the following code: Which statement is true when the procedure DELETE_DETAILS is invoked?

  

  A. It executes successfully but no error messages get recorded in the DEBUG_OUTPUT table

  B. It executes successfully and any error messages get recorded in the DEBUG_OUTPUT table.

  C. It gives an error because PRAGMA AUTONOMOUS_TRANSACTION can be used only in packaged procedures.

  D. It gives an error because procedures containing PRAGMA AUTONOMOUS_TRANSACTION cannot be called from the exception section.

  Correct Answer: A

  In this case, the debug output will only occur if there is an exception.