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?

Programing, A servey is done in M.P. by forest department finding different...

A servey is done in M.P. by forest department finding different types of species of birds the servey data covered four major cities indore,Bhopal,Gwalior,vidhisa. The result they o

What is jdbc exactly, What is JDBC exactly? Describe the steps required to ...

What is JDBC exactly? Describe the steps required to execute a SQL query using JDBC.

State in brief about the java, State in brief about the java Java is a ...

State in brief about the java Java is a object-oriented, simple, distributed, robust, interpreted, architecture-neutral, secure, portable, multi-threaded, high- performance and

Describe in general how java garbage collector works, Describe, in general,...

Describe, in general, how java garbage collector works?

Padovan String, A Padovan string P(n) for a natural number n is defined as:...

A Padovan string P(n) for a natural number n is defined as: P(0)=''X'' P(1)=''Y'' P(2)=''Z'' for a string characters ''X'',''Y'',''Z'' only,and given value of n,write a program th

What are adding methods, What are adding methods? A subclass isn't rest...

What are adding methods? A subclass isn't restricted to changing the behavior of its superclass. It can also add fully latest techniques and fields that are not shared along wi

Explain what is synchronization, When multiple threads working, Synchroniza...

When multiple threads working, Synchronization is to lock a method for a certain object.

Write a java console application, You are to write a Java console applicati...

You are to write a Java console application, following the Software Life Cycle model, which will read personnel records from a text file and store them in a data structure.  One li

Visa resolve online - websphere administrator, Visa Resolve Online and Heal...

Visa Resolve Online and Health Care Project: Visa Resolve Online In this project there are few modules like TRANSACTION INQUIRY,CHARGEBACK , REPRESENTMENT, ARBITRATION .

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