Illustrate normalization? , JAVA Programming

Assignment Help:

 

Normalization is a design technique that is mostly used as a guide in designing relational databases. Normalization is necessary a two step process that gives data into tabular form by removing repeating groups and then replaces duplicated data from the relational tables.

Redundant data wastes disk space and builds maintenance problems. If data that allows in more than one place must be modified, the data must be modified in exactly the same way in all locations which is prone to errors and time consuming. A modification to a customer address is much simpler to do if that data is stored only in the Customers table and now in the database.

Inconsistent dependency is a database structure that makes certain assumptions about the location of data. As, while it is intuitive for a user to look in the Customers table for the address of a particular client, it may not create sense to look there for the salary of the employee who invokes on that customer. The employee's salary  is  exist  to,  or  dependent  on,  the  employee  and  thus  could  be  placed  to  the  Employees  table. Inconsistent dependencies can create data difficult to access because the path to find the data cannot be logical, or may be
broken or missing.

 

 

1546_Normalisation.png


Related Discussions:- Illustrate normalization?

What are synchronized methods and synchronized statements, What are synchro...

What are synchronized methods and synchronized statements? Synchronized methods are methods that are used to control access to an object. A thread only implements a synchronize

Algorithm, write algorithm to perform the following operations on it create...

write algorithm to perform the following operations on it create,insertion,deletion,for testing overflow and empty conditions.

Describe logical operators in java, Describe Logical Operators in Java ? ...

Describe Logical Operators in Java ? The relational operators you've learned so far ( , >=, !=, ==) are enough while you only required to check one condition. Therefore what if

Clean up for java programs, You have recently joined a games company. The S...

You have recently joined a games company. The SQA manager has given you the task of improving the code quality of simple games. This is a standard task which the SQA manager gives

Write a javascript program which having two functions, Write a JavaScript p...

Write a JavaScript program which having two functions that are sum and mean. The web page will ask the user to enter five values to be added. After taking input it will compute

Coding, code for error correction and detection using even odd parity

code for error correction and detection using even odd parity

How dos attack is a cyber crime what cyber crime can be used, How DoS attac...

How DoS attack is a cyber crime? For what cyber crime can be used? DoS stands for Decline of Service and it is a cyber crime as it jams and within a few cases shut down the goa

String, in java string is a

in java string is a

Derfine j2ee in detail?, A J2EE component is a self-contained functional so...

A J2EE component is a self-contained functional software unit that is assembled into a J2EE application with its related files and classes and interacts with other components. The

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