text: CREATE TABLE TASK_EXECUTION  (
    TASK_EXECUTION_ID BIGINT  NOT NULL PRIMARY KEY ,
    START_TIME DATETIME DEFAULT NULL ,
    END_TIME DATETIME DEFAULT NULL ,
    TASK_NAME  VARCHAR(100) ,
    EXIT_CODE INTEGER ,
    EXIT_MESSAGE VARCHAR(2500) ,
    ERROR_MESSAGE VARCHAR(2500) ,
    LAST_UPDATED DATETIME ,
    EXTERNAL_EXECUTION_ID VARCHAR(255)
  );
  
  CREATE TABLE TASK_EXECUTION_PARAMS  (
    TASK_EXECUTION_ID BIGINT NOT NULL ,
    TASK_PARAM VARCHAR(2500) ,
    constraint TASK_EXEC_PARAMS_FK foreign key (TASK_EXECUTION_ID)
    references TASK_EXECUTION(TASK_EXECUTION_ID)
  ) ;
  
  CREATE TABLE TASK_TASK_BATCH (
    TASK_EXECUTION_ID BIGINT NOT NULL ,
    JOB_EXECUTION_ID BIGINT NOT NULL ,
  	constraint TASK_EXEC_BATCH_FK foreign key (TASK_EXECUTION_ID)
  	references TASK_EXECUTION(TASK_EXECUTION_ID)
  ) ;
  
  CREATE TABLE TASK_SEQ (ID BIGINT IDENTITY);
  