|
How about what should go into a data model instead.
These are qualities that a good logical data model should possess.
1. The model should be in third normal form or
higher.
2. All entities and attributes should have descriptions
written in business terminology.
3. All relationship should have a description describing
its purpose. Bad relationship names are "is a" or "relates
to.
4. Entity names should be singular. Use Customer
not Customers.
5. Entity definitions should include valid values,
aliases, and examples.
6. Attribute names should have a class word appended to
the end of the name.
7. An attribute should only have one
meaning.
8. Attribute names should be completely spelled
out.
9. Attributes properties should include its length,
optionality, and domain.
10. Relationship properties should include its
cardinality, referential integrity rules, type, and definition.
Regards,
Walter
WallStreet Consulting Services, Inc.
"Managing Your Data Investment"
>>> "John Miller" <[EMAIL PROTECTED]> 04/07/01 04:58AM >>> Hello All: I am looking for some good examples of data schemas. Does anyone happen to have some good examples (other than the standard examples). Thanks in advance. John Miller ************************************************************************ * Rose Forum is a public venue for ideas and discussions. * For technical support, visit http://www.rational.com/support * * Admin.Subscription Requests: [EMAIL PROTECTED] * Archive of messages: http://www.rational.com/products/rose/usergroups/rose_forum.jtmpl * Other Requests: [EMAIL PROTECTED] * * To unsubscribe from the list, please send email * * To: [EMAIL PROTECTED] * Subject:<BLANK> * Body: unsubscribe rose_forum * ************************************************************************* |
