The correct syntax to declare PL/SQL variable is___

A) variable_name [CONSTANT] datatype [NOT NULL] [:= | DEFAULT initial_value]

B) variable_name [CONSTANT] datatype [NULL] [:= | DEFAULT initial_value]

C) datatype [CONSTANT] variable_name [NULL] [:= | DEFAULT initial_value]

D) datatype [CONSTANT] variable_name [NOT NULL] [:= | DEFAULT initial_value]

Correct Answer : variable_name [CONSTANT] datatype [NOT NULL] [:= | DEFAULT initial_value]

Explanation :

The correct syntax to declare PL/SQL variable is :

variable_name [CONSTANT] datatype [NOT NULL] [:= | DEFAULT initial_value]

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