Обсуждение: OODBMS - PostgreSql

  We are new to PostgreSQL, and we have a plane to migrate our existing java application from DB2 to PostgreSQL. In this regard we would like to know that did PostgreSQL Support the following features. Anyone can tell us where can we found related documents.

 1) Will PostgreSQL support OODBMS features like Nested Tables of Objects, Object Reference etc.

 2) Will PostgreSQL support SQLJ/EJBQ

Thanks In Advance

On 20/06/2003 07:20 postgre sql wrote:
> approve praxid show postgres_neterp@yahoo.co.uk
>
> Hi,
>
>
>   We are new to PostgreSQL, and we have a plane to migrate our existing
> java application from DB2 to PostgreSQL. In this regard we would like to
> know that did PostgreSQL Support the following features. Anyone can tell
> us where can we found related documents.
>
>
>
>  1) Will PostgreSQL support OODBMS features like Nested Tables of
> Objects, Object Reference etc.

I can't find any reference on IBM's web site to indicate that DB2 supports
these functions. What version of DB2 are they in? UDB 8.1 seems to be the
latest and I can't see anything mentioned there.

PostgreSQL could best be described as an object-relational database. It
supports table inheritence. See:

http://www.postgresql.org/docs/view.php?version=7.3&idoc=0&file=tutorial-inheritance.html

>
>  2) Will PostgreSQL support SQLJ/EJBQ
>

These are Java client/middleware functions. The easiest way to find out if
your app server and the JDBC driver are happy together is to try it. I
don't use either SQLJ (I thought that died the death years ago) or EJBs. I
use a simple DAO architecture running under Tomcat and find it works
extremely well.

HTH

--
Paul Thomas
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