Oracle - Iterative Processing with Loops MCQ

Oracle – Iterative Processing with Loops

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1. What is the primary purpose of loops in Oracle PL/SQL?

To simplify conditional logic

To perform calculations

To declare variables

To repeat a set of actions

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2. Which type of loop in PL/SQL is used for situations where you want to execute a set of statements at least once?

WHILE loop

Simple loop

FOR loop

Numeric FOR loop

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3. In PL/SQL, how can you terminate a simple loop?

Using the EXIT statement

Using the RETURN statement

Using the BREAK statement

Using the CONTINUE statement

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4. What is the purpose of the EXIT statement in PL/SQL loops?

To continue the loop

To reset loop variables

To skip the current iteration

To terminate the loop completely

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5. How can you emulate a “REPEAT UNTIL” loop in PL/SQL?

By using a CONTINUE statement

By using a FOR loop

By using a simple loop with an EXIT WHEN condition

By using a WHILE loop

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6. What type of loop in PL/SQL is intentionally designed to run indefinitely until explicitly terminated?

Numeric FOR loop

Simple loop

WHILE loop

FOR loop

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7. In a WHILE loop, when is the condition checked for the first time?

It is never checked in a WHILE loop

Only at the end of the loop

Before each iteration

After each iteration

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8. What is the primary purpose of a Numeric FOR loop in PL/SQL?

To declare variables

To perform calculations

To iterate through a range of numbers

To simplify conditional logic

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9. In a Numeric FOR loop, what is the purpose of the IN keyword?

To skip iterations

To specify the range of values for iteration

To define the loop index variable

To perform calculations

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10. What is a rule for Numeric FOR loops in PL/SQL?

The loop index must be initialized with a value

The loop index must be declared outside the loop

You can only use positive integers as loop indexes

Numeric FOR loops are not supported in PL/SQL

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11. When handling nontrivial increments in a Numeric FOR loop, what can you use to control the loop?

EXIT statement

EXIT WHEN clause

GOTO statement

CONTINUE statement

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12. What type of loop in PL/SQL is often used for iterating through the rows of a result set from a query?

Simple loop

WHILE loop

Numeric FOR loop

Cursor FOR loop

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13. In PL/SQL, what is the purpose of loop labels?

To provide names for loops

To control loop execution

To specify loop termination conditions

To declare variables

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14. What is the purpose of the CONTINUE statement in PL/SQL loops?

To exit the loop

To terminate the program

To skip the rest of the current iteration and move to the next

To reset loop variables

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15. What is a best practice when using loops in PL/SQL for iterative processing?

Use understandable names for loop index variables

Avoid the use of labels

Use non-descriptive names for loop index variables

Use GOTO statements for loop control

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16. In PL/SQL, how can you obtain information about the execution of a FOR loop?

By querying the ALL_OBJECTS view

By using DBMS_OUTPUT.PUT_LINE statements

By using the DEBUG statement

By checking the server log

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17. What is the primary purpose of using SQL statements within a loop in PL/SQL?

To declare variables

To interact with a database

To create tables

To perform calculations

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18. Which loop type is intentionally designed to run indefinitely until explicitly terminated in PL/SQL?

Numeric FOR loop

FOR loop

Simple loop

WHILE loop

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19. What is the main benefit of using a WHILE loop in PL/SQL?

It terminates the program

It allows you to iterate through a range of numbers

It always runs indefinitely

It simplifies conditional logic

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20. In PL/SQL, how do you terminate a loop without executing the remaining iterations?

By using the CONTINUE statement

By using the RETURN statement

By using the BREAK statement

By using the EXIT statement

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21. What is the primary purpose of loop labels in PL/SQL?

To control loop execution

To provide names for loops

To specify loop termination conditions

To declare variables

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22. What is the primary purpose of the CONTINUE statement in PL/SQL loops?

To reset loop variables

To exit the loop

To terminate the program

To skip the rest of the current iteration and move to the next

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23. In PL/SQL, what is the main benefit of using SQL statements within a loop?

To interact with a database

To perform calculations

To declare variables

To create tables

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Oracle – Iterative Processing with Loops MCQ