Multiple choice technology programming languages

In a PL/SQL block structure, which parts are optional?

  1. DELCARE and BEGIN

  2. DECALRE and EXCEPTION

  3. EXCEPTION and END

  4. BEGIN and END
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A PL/SQL block consists of optional DECLARE and EXCEPTION sections, and mandatory BEGIN and END sections. The options contain typos ('DELCARE' or 'DECALRE'), but the concept identifies the DECLARE (spelled DECALRE here) and EXCEPTION clauses as the optional parts of the block structure.

AI explanation

To answer this question, we need to understand the structure of a PL/SQL block.

A PL/SQL block consists of four main parts: DECLARE, BEGIN, EXCEPTION, and END.

The DECLARE section is used to declare variables, cursors, and other PL/SQL objects. It is optional in a PL/SQL block.

The BEGIN section is where the executable statements of the block are placed. It is also optional in a PL/SQL block.

The EXCEPTION section is used to handle exceptions that may occur during the execution of the block. It is optional in a PL/SQL block.

The END section marks the end of the block. It is a required part of a PL/SQL block.

Based on the given options, let's go through each one:

Option A) DELCARE and BEGIN - Both DECLARE and BEGIN are optional parts of a PL/SQL block. This option is incorrect.

Option B) DECALRE and EXCEPTION - Both DECLARE and EXCEPTION are optional parts of a PL/SQL block. This option is correct.

Option C) EXCEPTION and END - The EXCEPTION section is optional, but the END section is required. This option is incorrect.

Option D) BEGIN and END - The BEGIN section is optional, but the END section is required. This option is incorrect.

Therefore, the correct answer is B) DECALRE and EXCEPTION. These parts are optional in a PL/SQL block.

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