author | Laure Bourgois <Laure.Bourgois@logilab.fr> |
Tue, 25 Nov 2008 17:44:54 +0100 | |
changeset 144 | 3159772915c4 |
parent 114 | 9ecd54ea0634 |
permissions | -rw-r--r-- |
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[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
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.. -*- coding: utf-8 -*- |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
diff
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9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
diff
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Data Model definition (*schema*) |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
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9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
diff
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9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
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The schema is the main concept of `LAX` applications as it defines the |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
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data model we will handle. It is based on entities types already defined |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
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in the library and others, more specific, we would expect to find in one or |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
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more Python files under the `schema` directory. |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
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[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
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It is important to make clear the difference between relation type and relation |
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[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
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definition: a relation type is only a relation name with potentially other |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
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13 |
additionnal properties (see XXXX), whereas a relation definition is a complete |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
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triplet "<subject entity type> <relation type> <object entity type>". A relation |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
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type could have been implied if none is related to a relation definition of the |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
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schema. |
9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
diff
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9a9fe515934d
[doc] reuse the lax book
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
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.. include:: 03-10-stdlib-schemas.en.txt |
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.. include:: 03-11-definition-schema.en.txt |