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- To: "Anthony B. Coates" <abcoates@TheOffice.net>,"xml-dev" <firstname.lastname@example.org>
- Subject: RE: [xml-dev] The Browser Wars are Dead! Long Live the Browser Wars!
- From: "Dare Obasanjo" <email@example.com>
- Date: Mon, 21 Oct 2002 03:58:32 -0700
- Thread-index: AcJ443Q24H5NZhm/RMuQFX7HUgr+yAABFGfg
- Thread-topic: [xml-dev] The Browser Wars are Dead! Long Live the Browser Wars!
> -----Original Message-----
> From: Anthony B. Coates [mailto:abcoates@TheOffice.net]
> Sent: Monday, October 21, 2002 2:20 AM
> To: xml-dev
> The two approaches may look the same, but looks can be
> deceiving. SQL queries tend to be tightly coupled to a
> particular physical database schema, which makes them brittle
> with regard to changes in the DB schema and/or changes of
> target database. XML queries tend to be more declaritive in
> nature, with a receiving system then mapping the queries to a
> database-specific request (which could be SQL).
This has little to do with the differences between relational and XML
querying. All you've pointed out is that XML queries are typically done
against a "view" while SQL queries are typically run against an actual
database schema. A query against XML can be similarly tightly coupled if
done against an XML repository (i.e. a native XML or XML-enabled DBMS)
as can a SQL query be loosely coupled if performed against a SQL view.
PITHY WORDS OF WISDOM
Whenever you set out to do something, something else must be done first.
This posting is provided "AS IS" with no warranties, and confers no