RE: [INTERFACES] How to implement referential facilities in Postg reSQL

Check the contrib/spi/refint.* in the distribution.  To answer your
question you use triggers to implement it.  In Postgres v6.4 and higher
you could also use rules to implement referential integrity (for
examples see src/test/regress/sql/rules.sql).

    -DEJ

> -----Original Message-----
>     Hi everybody,
>
>      Happy New Year to you all.
>
>
>    We have a rather large M$ Access application for time and
> attendance
> and job time registration. It has been implemented in M$
> Access using a
> M$ Access database running on a M$ 'operating system'.
>
>    One of our issues is to use the PostgreSQL in stead
> of/underneath the
> M$ Access database application, which is the existing
> application running
> well on M$ Access with not so large amounts of data. We of course need
> to run this on a Linux box. The application makes extensive
> use of some
> Access 'referential features'.
>
>    So my question is:
>
>    What is the equivalent of
>
>      'Enforce Referential Integrity',
>      'Cascade Update Related Fields', and
>      'Cascade Update Related Records' in
>
> SQL/PostgreSQL terms. In other words, how do I get these
> facilities into
> my PostgreSQL database? I need to be able to have the M$
> Access application
> to link directly to the PostgreSQL tables using ODBC, which I
> have managed
> to copy directly using Access, but with no Primary/Foreign
> keys what so ever.
>
>
>    Thanks for any sugestions,
>
>   Leif
>
>