Re: TMQL: Direct (super|sub)types?

Robert Cerny <[email protected]>
Newsgroups gmane.text.xml.xtm.general
Message-ID <[email protected]> 
Am 03.03.2011 um 10:43 schrieb Lars Heuer:

> Adding 4 axes wouldn't have the same effect, but my conclusion would
> be the following rule of thumb: Do we loose expensiveness if we don't
> add them?

Not sure about that.

> Are we introducing a doubtful terminology/value?

If TMQL does not introduce a terminology for the distinction, then something doubtful will arise because there *is* different ways how to tackle this issue. Whatever choice you make on the defaults you will have to support it with additional axis. Correct?  I like the approach the document [1] proposes. What is your alternative proposal?

> Is it possible to add them later if we have enough experience with TMQL and
> keep backwards-compatibility?

There is already experience with Topic Maps query languages.

Kind regards,

Robert Cerny

[1] http://www.itscj.ipsj.or.jp/sc34/open/1586.pdf
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