text: alter table ACT_RE_PROCDEF add column ENGINE_VERSION_ varchar(191);
  update ACT_RE_PROCDEF set ENGINE_VERSION_ = 'v5';
  
  alter table ACT_RE_DEPLOYMENT add column ENGINE_VERSION_ varchar(191);
  update ACT_RE_DEPLOYMENT set ENGINE_VERSION_ = 'v5';
  
  alter table ACT_RU_EXECUTION add column ROOT_PROC_INST_ID_ varchar(64);
  create index ACT_IDX_EXEC_ROOT on ACT_RU_EXECUTION(ROOT_PROC_INST_ID_);
  
  alter table ACT_RU_EXECUTION drop foreign key ACT_FK_EXE_PARENT;
  alter table ACT_RU_EXECUTION add constraint ACT_FK_EXE_PARENT foreign key (PARENT_ID_) references ACT_RU_EXECUTION (ID_) on delete cascade;  
  
  alter table ACT_RU_EXECUTION drop foreign key ACT_FK_EXE_SUPER;
  alter table ACT_RU_EXECUTION add constraint ACT_FK_EXE_SUPER foreign key (SUPER_EXEC_) references ACT_RU_EXECUTION (ID_) on delete cascade;
  
  update ACT_GE_PROPERTY set VALUE_ = '6.0.0.0' where NAME_ = 'schema.version';
  
  