Issues on draft Exp2

[Phil Spiby]

Pascal,
 
Thanks for the comments.
 
The Language version identifier will be removed
The syntax blocks will be consistant (when I have sent the updated
syntax and a utility to Jochen for handling this!)
 
There should be no surprise about a Generic_entity attribute being
redeclared to be a Generic_entity extensible select, this does fit in
with the ideas of specialization (although not fully documented yet what
the specializations of a generic_entity are yet!)
The domain (value space) of a generic_entity is all possible entity
instances (anything with a # number in a physical file!), then a
sub-domain (specialization) of that is a generic entity extensible
select, since at most this can specify all entities in the current
schema (i.e. the same as the generic entity itself) but will usually be
a subset of the available entities.
 
Phil
 
 -----Original Message-----
From: owner-wg11 at steptools.com [mailto:owner-wg11 at steptools.com] On
Behalf Of Pascal Huau
Sent: 04 July 2002 10:43
To: Jochen Haenisch; Phil Spiby
Cc: WG11; Dave Loffredo
Subject: Issues on draft Exp2



Jochen , Phil,
 
 
Thanks for the draft of Exp2 that helps a lot.
 
Some minor issues:
- Clause 7.6 (language version identification) should be removed or
amended on the basis of Stockholm decision
- grammar rules in clause 9.2 are not consistent with grammar rule in
clause 9.2.3 (and it would be better to have only once these rules
rather than than having them 3 or 4 times in 9.2.x )
- clause 9.7 should be located much closer to clause 9.2.3
 
 
One major one (I do not know whether it has already been discussed):
- in clause 9.2.3.4, I am quite surprised to read that in a subtype an
attribute of type Generic_entity can be redeclared in a Generic_entity
select. This is inconsistent with the 1st rule in that clause that
states that an attribute may be redeclared in a specialization of the
original entity data type. 
 
 
regards,
Pascal Huau
Association GOSET
107,111 avenue Clemenceau
92000 Nanterre
France

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