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RE: IfExpr has a mandatory else clause

From: Jim Tivy <jimt@bluestream.com>
Date: Fri, 30 Jan 2004 12:04:52 -0800
To: "Jimmy Zhang" <crackeur@comcast.net>, <www-ql@w3.org>
Message-ID: <DPECLLHJEEMBIIAKIHHICEIACGAB.jimt@bluestream.com>

Jimmy

Feel free to download XStreamDB, a native XML database, from
www.bluestream.com.  The reference manual describes our current support for
Update, although we are currently working on an improved syntax.

cheers
Jim

> -----Original Message-----
> From: www-ql-request@w3.org [mailto:www-ql-request@w3.org]On Behalf Of
> Jimmy Zhang
> Sent: Friday, January 30, 2004 1:14 AM
> To: www-ql@w3.org
> Subject: Re: IfExpr has a mandatory else clause
>
>
>
> Hello,
>
>   I am really interested in the update, modify and delete aspect
> of XQuery.
> Could someone
> provide some pointers as to how existing products implement those
> features.
>
>   My questions (which I am looking for some kind of references):
>
>   (1) Assuming XQuery is built directly on top of native XML datatype,
> instead of DBMS form of storage,
> how do update, modify and delete of individual data fields impact the
> performance of database?
>
>   (2) Do any Xquery implementations offer features that allow one to
> extract/remove an element in its serialized format?
>
>   (3) Do any Xquery implementations allow one to splice together new XML
> document from multiple other documents? Or the reverse of it, which allows
> one to quickly take apart a big XMLdoc into multiple smaller ones?
>
>   (4) Would features in 1~3 be useful now? What about in the future?
>
>  Thanks,
> Jimmy
>
>
>
>
Received on Friday, 30 January 2004 15:06:51 GMT

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