declare
    object_exists exception;
    pragma exception_init (object_exists , -00955);
begin
	execute immediate 'CREATE TABLE VERSAO(
	VERSAO_ID NUMBER(7) NOT NULL,
	VERSAO VARCHAR(45) NULL,
	OBSERVACAO VARCHAR(200) NULL,
	DATA_VERSAO DATE NULL,
	DATA_ALTERACAO DATE NULL,
	CONSTRAINT PK_VERSAO_VERSAO_ID] PRIMARY KEY (VERSAO_ID))';

    exception when object_exists then null;
end;