[Zope-DB] Relational Databases in Zope 2 and Zope 3

Scot Roberts scot.roberts at five.tv
Tue Jun 29 11:17:13 EDT 2004

Tres Seaver wrote:

> The dilemma here is similar to the classic one between OLAP and OLTP: 
> arbitrarily flexible queries are death to transactional throughput.
> If your application *needs* this flexibility, then you *can't* take 
> advantage of prepared queries anyway, as there is no "canonical" version
> of the query to prepare.  There are is *huge* space of applications, 
> however, which *could* benefit from prepared queries;  for them the 
> price of DTML's flexibility is both painful and unneccessary.
> Tres.

Which means that there's a need for both ZSQL Methods as they stand now 
(perhaps with the dtml- bit removed from the tags) for those of us who 
value flexibility over raw throughput and some other method for writing 
prepared queries. Although have to wonder why I wouldn't just used a 
stored procedure on the db server instead of having a prepared query in 
Zope, because if I was that concerned with performance that's what I do.




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