Minggu, 03 Mei 2009

NORMALIZATION


NORMALIZATION EXERCISE

ERD


Erd of the above relationship between the entities cardinality PART with entities and entity PROJECT PROJECT ternary to have an incomplete explanation. I think the relationship between the entities with the entity PROJECT PART is 1: N where one part can have many projects and one project is owned by only one part only.

Normalization 1NF

Form of normalization of ERD over as follows:


These fields obtained from the above entities except in the attribute field KONTROLPEG and LEADER. Field is obtained from the relation of 1:1 entity employees and employees of entities to entities PART.

1NF form from above and then obtained the form of 2NF normalization as follows:


Normalization 2NF



In the form of a table is 2NF separated in accordance with the Functional Dependency going.


2NF form from above and then obtained the form of 3NF normalization as follows:

Normalization 3NF



Can be seen from the above that the form of 3NF with the same form as it was when 2NF possible to attribute all forms of 2NF in the table depend only on one attribute on the table. This is in accordance with the requirements of the 3NF in one table all the attributes must be dependent on the one attribute that serves as a primary key.

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