text: create table ACT_HI_IDENTITYLINK (
      ID_ varchar(64),
      GROUP_ID_ varchar(255),
      TYPE_ varchar(255),
      USER_ID_ varchar(255),
      TASK_ID_ varchar(64),
      CREATE_TIME_ timestamp,
      PROC_INST_ID_ varchar(64) null,
      primary key (ID_)
  );
  
  create index ACT_IDX_HI_IDENT_LNK_USER on ACT_HI_IDENTITYLINK(USER_ID_);