Re: S.O.D.A. database Query API - call for comments

In article <9cq0jp$vdg$04$1_at_news.t-online.com>, Carl Rosenberger says...
>
>JRStern wrote:
>> >- We are creating an API, not a query language. The API will allow to
 create
>> >queries step-by-step with many small functions.
>>
>> Of course, it was exactly to get away from that, that SQL was
>> invented.
>
>Great!
>Do you have any links to old approaches?
>Thanks in advance.
>
>I am afraid that object-orientation was not used in those days.

Robert Martin on comp.object admitted that OODBMS is no more than persistent storage of nested structures.

begin quote >>>>>>

Object Oriented databases have an unfortunate name. They aren't object oriented at all. Rather they are like large virtual memory areas. The "objects" in an OODB are really just data structures. Their behavior is typically not stored with them.

Both kinds of database expose data, whereas true OO hides data and exposes behavior. RDBs have little or no behavior. OODBs sometimes pretend to have behavior (methods in the objects) but developers will find that as the application domain grows they will feel a pressure to move that behavior out of the database classes and into specific application classes.

<<<< end quote

If nesting is the only feature that you leverage, then the approach is essentially CODASYL, or even worse, hierarhical db. Received on Sat Jul 21 2001 - 20:00:38 CEST