create table metadata_id (
  namespace                     varchar(255) not null,
  id                            bigint not null,
  constraint uq_metadata_id_namespace_id unique (namespace,id)
);

create table metadata_aspect (
  urn                           varchar(500) not null,
  aspect                        varchar(200) not null,
  version                       bigint not null,
  metadata                      clob not null,
  createdon                     timestamp not null,
  createdby                     varchar(255) not null,
  createdfor                    varchar(255),
  constraint pk_metadata_aspect primary key (urn,aspect,version)
);