On Thu, Oct 19, 2006 at 07:51:17AM -0300, Rodrigo Sakai wrote: > I?m developing a specialist application that needs a different kind of > referential integrity! I need interval referential integrity where the > bounds of the referenced interval must overlaps (or be equal) the bounds of > the referencing interval! Use triggers. -- Jim Nasby jim@xxxxxxxxx EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)