TAP WD 1.0: disentangling query types and query languages

[Alberto Micol]

Dear TAP Authors,

the "1.1 Query Types" paragraph mentions three different kinds of  
queries: data/metadata/vosi
but then one reads:

1.1.1 Data queries
1.1.2 Metadata queries
1.1.3 VOSI
1.1.4 ADQL queries
1.1.5 PQL queries
1.1.6 Other query languages

I find that misleading.
Even more so given the fact that ADQL and PQL are both able to perform  
Data and Metadata queries.

The type of query as nothing to do with the language used to perform  
such queries,
those two concepts should not get intermixed.

May I suggest the following structure:

1.1 Query types
    1.1.1 data ...
    1.1.2 metadata ...
    ...

1.2 Query languages
    1.2.1 ADQL
    1.2.2 PQL
    1.2.3 Other query languages

1.3 Query execution
    ...

etc.

?

Thanks,
Alberto


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