CREATE TABLE RegistUnregDataInfo ( RegID TEXT(32), ProjectID TEXT(32), InstrumentNo INT, FilePath TEXT(255), RegDate DateTime); CREATE TABLE RentalInfo ( RegID TEXT(32), DataFileLogicalPath TEXT, APLName TEXT(64), UserName TEXT(64)); ALTER TABLE RegistUnregDataInfo ADD PRIMARY KEY(RegID); ALTER TABLE RentalInfo ADD PRIMARY KEY(RegID,DataFileLogicalPath); ALTER TABLE RentalInfo ADD CONSTRAINT fkey FOREIGN KEY(RegID) REFERENCES RegistUnregDataInfo(RegID);