Re: Application logic and Business logic
From: frebe (fredrik_bertilsson_at_passagen.se)
Date: 03/18/05
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Date: 18 Mar 2005 10:00:06 -0800
> How do you explain Object Databases that provide query languages?
In this case (ODMG OQL), we are talking about a hybrid
object-relational query language and not about a network-OO query
language. OQL is heavily based on SQL and relational calculus
(selection, projection, joins, etc). Saying that SQL and OQL is
different is just to play with words. If class=table and object=record,
you will find that OQL=SQL.
Databases that provides OQL is just a layer on top of a relational
database. It would be impossible for a network (OO) database to execute
OQL queries faster than linear time.
Fredrik Bertilsson
http://butler.sourceforge.net
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