Defines relational expressions.

Revision | $Id: //open/dev/farrago/src/org/eigenbase/rel/package.html#6 $
Copyright | Copyright (C) 2005-2009 The Eigenbase Project Copyright (C) 2003-2009 SQLstream, Inc. Copyright (C) 2005-2009 LucidEra, Inc.
Author | Julian Hyde

## Related packages and classes

- Package`org.eigenbase.sql` is an object model for SQL expressions
- Package`org.eigenbase.rex` is an object model for relational row expressions
- Package`org.eigenbase.relopt` provides an optimizer interface.