Rules Of Data Normalization

This is the first 1,000 characters of 1551 words (6.2 pages) in the term paper titled Rules Of Data Normalization

Rules of Data Normalization
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Eliminate Repeating Groups - Make a separate table for each set of related
attributes, and give each table a primary key.
Eliminate Redundant Data - If an attribute depends on only part of a multi-
valued key, remove it to a separate table.
Eliminate Columns Not Dependent On Key - If attributes do not contribute to
a description of the key, remove them to a separate table.
Isolate Independent Multiple Relationships - No table may contain two or
more 1:n or n:m relationships that are not directly related.
Isolate Semantically Related Multiple Relationships - There may be
practical constrains on information that justify separating logically
related many-to-many relationships.
Optimal Normal Form - a model limited to only simple (elemental) facts, as
expressed in ORM.
Domain-Key Normal Form - a model free from all modification anomalies.
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1. Eliminate Repeating Groups
In the original member list, each member name is followed by any databases
that th...

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