[PERFORM] FOREIGN KEYS vs PERFORMANCE

[Rodrigo Sakai]

Hi,     I think this is an old question, but I want to know if it really is well worth to not create some foreign keys an deal with the referential integrity at application-level?????   Specifically, the system we are developing is a server/cliente architecture that the server is the database and the fat client is an application developed in DELPHI!!!     Thanks in advance!!