Problem with duplicated attributes in oracle when transforming logical model to phisical model
Date: Tue, 18 Jan 2000 10:58:58 GMT
Message-ID: <861h1e$uf8$1_at_nnrp1.deja.com>
hi,
I am using Oracle designer 2.1.2.
I have the following problem.
I create the entity relationship diagrammer, after i use the database design transformer, but some entities have duplicated the attributes because the relationships are transferable. I have two attributes with the same meaning but each one belongs to a different relation. Example
Entity1
Keys Entity1Id
Entity2 : Relation 1 to N with Entity A transferable Primary Key
Keys Entity1Id,Entity2Attribute
Entity3 : Relation1 with Entity1 1 to N transferable (not primary key)
Relation2 with Entity2 1 to N transferable (not primary key)
Keys Entity3Id
Attributes Entity1Id(Relation 1),Entity1Id(relation
2),Entity2Attribute
As we can see in entity3 we have Entity1Id duplicated one for each relation, and they are the same.
There is a way to do this in the Entity Relationship diagrammer, instead of generated an script(PL/SQL) dropping the attributes duplicated and creating the relation?
Thanks in advance and excuse my English.
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Received on Tue Jan 18 2000 - 11:58:58 CET