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Draw Entity Relation Database - Essay Example

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In the essay "Draw Entity Relation Database" the author discusses the primary design for the ERD, which comes in action with the various entities that have been identified along with the mapping of such entities with each other with the help of relationships…

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Subject: Education
Type: Essay
Level: High School
Pages: 1 (250 words)
Downloads: 5

Extract of sample "Draw Entity Relation Database"

A) Given the following table, normalize to 3NF where PK=Primary Key and FK = Foreign Key. Hint: 2nd normal form problemPart Number (PK)Warehouse (PK)LocationAt this point, the location attribute is dependent on the Warehouse (PK) only and not on Part Number (PK). It also means that a non-prime attribute is dependent partially on the key attribute, which would fall under the second normal form. After 2NF is normalization the relations would be as follows:Part Number (PK)Warehouse (PK)B) Given the following table, normalize to 3NF where PK=Primary Key and FK = Foreign Key.

Hint: transitivity problemEmployee ID (PK)DeptDept LocationAt this point, the Dept is dependent on Employee (PK) and Dept Location is dependent on Dept which arises a transitivity problem. It can be solved as follows.

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Draw Entity Relation Database Essay Example | Topics and Well Written Essays - 250 Words. https://studentshare.org/education/1528002-draw-entity-relation-database-and-normalization-diagram.

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