Illustrate normalization? , JAVA Programming

 

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

Posted Date: 7/27/2012 4:48:34 AM | Location : United States







Related Discussions:- Illustrate normalization? , Assignment Help, Ask Question on Illustrate normalization? , Get Answer, Expert's Help, Illustrate normalization? Discussions

Write discussion on Illustrate normalization?
Your posts are moderated
Related Questions
Project Description: Computer vision and Image processing project to extract book title Skills required: Java, C Programming

what are the steps of object oriented programming language?

Individual Assignment Rework Asteroids to have a different gameplay In the previous assignments, we have developed an Asteroids game. In this assignment, we are going to u

What type of information can be stored in a database? In a database we can store several types of informations like: • Numbers, Booleans, text • Sounds • Images • Video

The while statement define a loop that iterates as long as condition remains true. In the following instance the control waits till the value of a text field becomes "go":

Class diagram technique is vital within Object Oriented functions. Class diagrams illustrate the kinds of objects in the system and the several static relationships among them. Cl

For this assignment you'll create some classes for modeling tickets for a city subway system. The type of system we are modeling has these main features: Stations are grouped in

Task I have an Android mobile app project that I''m trying to get profiles to transfer by connecting to a server at 23.23.175.213 port 1337. I have to send a json string to the se

For this assignment, you will write a Java windowed application to do online quiz on general knowledge and the application also displays the quiz result. Overview of the applic