What are different normalization forms, Computer Engineering

Assignment Help:

What are different normalization forms?

1NF: Eliminate Repeating Groups Make a separate table for every set of related attributes, and give each table a primary key. Each field contains at most one value from its attribute domain.

2NF: Eliminate Redundant Data If an attribute depends on only part of a multi-valued key, remove it to a separate table.

3NF: Eliminate Columns Not Dependent on Key if attributes do not contribute to a explanation of the key; remove them to a separate table. All attributes must be directly dependent on the primary key.

BCNF: Boyce-Codd Normal Form If there are non-trivial dependencies among candidate key attributes, separate them out into distinct tables.

4NF: Isolate Independent Multiple Relationships No table may contain two or more 1: n or n: m relationships that are not directly related.

5NF: Isolate Semantically Related Multiple Relationships There may be practical constrains on information that justify separating logically related many-to-many relationships.

 


Related Discussions:- What are different normalization forms

Explain working of dotmatrix or inkjet printers, Q. Explain working of DotM...

Q. Explain working of DotMatrix or InkJet Printers? Three major issues consider the quality of characters generated by DotMatrix/InkJet Printers: - Number of dots in the matrix

4 bit comparator, how to breadboARD THE 4 BIT COMPARATOR

how to breadboARD THE 4 BIT COMPARATOR

Constraint satisfaction problems, Constraint Satisfaction Problems: Fu...

Constraint Satisfaction Problems: Furthermore I was perhaps most proud of AI on a Sunday. However this particular Sunday, a friend of mine found an article in the Observer reg

Describe the characteristics of mainframes, Problem 1 (a) List and desc...

Problem 1 (a) List and describe the characteristics of mainframes, minicomputers and microcomputers. (b) Briefly describe what is meant by electronic commerce and what b

Two ways of producing a list within a transaction, What are the two ways of...

What are the two ways of producing a list within a transaction? By submitting a separate report. By using leave to list-processing.

Minimax algorithm - artificial intelligence, Minimax algorithm - artificial...

Minimax algorithm - artificial intelligence: The minimax algorithm is so called because it assumes that you and your opponent are going to act rationally, so that if you will

What are the 2 ieee standards for floating point numbers, What are the 2 IE...

What are the 2 IEEE standards for floating point numbers? 1.single 2.double

Internet programming, Futoshiki is a game played on an N by N (usually 5 by...

Futoshiki is a game played on an N by N (usually 5 by 5) grid and uses the symbols 1 .. N. The objective of the game is to place each symbol on the grid so that it only occurs once

Message passing model, In the message-passing model, there exists a set of ...

In the message-passing model, there exists a set of tasks that use their own local memories during computation. Multiple tasks can reside on the similar physical machine as well ac

Explain about synchronous dram, Q. Explain about Synchronous DRAM? One ...

Q. Explain about Synchronous DRAM? One of the most broadly used forms of DRAM is synchronous DRAM (SDRAM). Unlike the conventional DRAM that is asynchronous SDRAM exchanges dat

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd