From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Luiz Renuncio <renuncio(at)ipf(dot)uni-karlsruhe(dot)de> |
Cc: | PostgreSQL-general <pgsql-general(at)postgreSQL(dot)org> |
Subject: | Re: types inheritance |
Date: | 1999-08-04 18:27:54 |
Message-ID: | 199908041827.OAA01034@candle.pha.pa.us |
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Lists: | pgsql-general |
> Dear Bruce,
>
> many thanks for your answer.
>
> Yes, I wanted to know if it is / will be also possible to have types inherited
> from other primitive types. This is, for instance, what happens in Oracle and
> SpatialWare. In these databases I am able to write different types of
> geometric primitives in the same column of a table.
>
> A type point or circle or line inherits from some geometric superclass (say
> GEO). The consequence is that if one wants to store points, circles,... in the
> same atribute he just need to declare this atribute as beeing of type GEO.
>
> This would probably make my life easier. I looked for inheritance in
> postgresql, but I only found it for tables.
>
> Do you understand that?
Yes. I am CC'ing this to general to see if anyone has comments.
--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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