Table vm_message

create table vm_message
(
 MessageId varchar(128) not null,
 MessageType integer not null default 1,
 UseCount integer not null default 1,
 Sender varchar(256) not null,
 Urgent boolean not null default false,
 Private boolean not null default false,
 MessageLength integer ,
 MessageSize integer ,
 MessageTime bigint ,
 AttachedMsgId varchar(128) ,
 MessageOid OID ,
 UTCTime varchar(32) ,
 EndTime bigint not null default 9223372036854775807,
 ReceiveTime bigint not null default 0,
 NdrReason integer ,
 StartTime bigint default 0,
 MWIOn boolean not null default false,
 TotalMessageLength integer not null default 0,

 foreign key (AttachedMsgId) references vm_message on delete cascade on update
 cascade,
 primary key (MessageId)
);

Table vm_usermsg