Syntax for case structure?

technology databases

  1. Case [ TRUE | selector_variable ]] When [criteria1 | expression1 ] then criteria1_statements; When [criteria1 | expression1 ] then Criteria2_statements; Else block statement; end;

  2. Case value case [criteria1 | expression1 ] then criteria1_statements; case [criteria1 | expression1 ] then Criteria2_statements; Else block statement; end case;

  3. Case [ TRUE | selector_variable ]] When [criteria1 | expression1 ] then criteria1_statements; When [criteria1 | expression1 ] then Criteria2_statements; Else block statement; end case;

  4. Case [ TRUE | selector_variable ]] Loop When [criteria1 | expression1 ] then criteria1_statements; When [criteria1 | expression1 ] then Criteria2_statements; Else block statement; end Loop;

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Correct Option: C

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