> On Mon, 28 Mar 2005, Mark Woodward wrote:
>
>>> Hi there,
>>>
>>> while learning inkscape I did a sketch of picture describing
>>> history of relational databases. It's available from
>>> http://mira.sai.msu.su/~megera/pgsql/
>>
>> Is there a direct line from INGRES to Postgres? I was under the
>> impression
>> that Postgres is a "new" lineage started after INGRES sharing little or
>> no
>> code.
>
> No code sharing, but only Stonebraker and his ideas about extensibility,
> objects and lessons learned after Ingres, so it's named Postgres.
I would indicate that differently, maybe a dash or dotted line?
>
>
>>
>> The line from Ingres through RDb, Oracle, to Informix seems to indicate
>> a
>> lineage. Is there one? Is Oracle based, in some way, on INGRES?
>>
>
> No, line just crossing Oracle which bought Rdb/VMS. I'll adjust picture.
>
>
>> IS there a relation between IBM System R and INGRES or is that just a
>> placement issue?
>
> No, I placed them close to underline their importance for relational
> databases.
It is hard to imply relationships without also implying derivation.
>
>>
>> What is the raltionship between System R and SQL and DB2?
>
> Sure. System R was a research project of IBM
> SEQUEL is a language designed to work with data stored in System R.
> SEQUEL was renamed to SQL then because there was existed trademark.
> IBM developes SQL/DS database which then became DB2.
>
>>
>> What does Agatha Christie have do do with anything? (Other than having
>> Hecule investigate the death of SCO.)
>>
>
> "elephants can remember" - elephant here is a keyword
>
> IIRC, it was this proposal for postgresql logo
> http://www.pgsql.ru/db/mw/msg.html?mid=1238939
I loved the movie "Gross Point Blank" :-)
>
> We used jaguar(leopard) before (famous postgresql empowered).
> I don't remember who was the first author of Elephant logo.
I think the elephant logo is great. Between Elephants, penuins, open
source is starting to look like a zoo.
