when normalization is required
Answers were Sorted based on User's Feedback
Answer / shahnaz
Normalization is used to improve the performance of database and is applied in the last step of logical database design.The Goal of Normalization is to
1.Eliminate the duplicate data from table
2.Ensure data dependency
we can achieve this by creating multiple tables for each set and by creating primary and foreign keys and building relationship between the newly created tables.
Is This Answer Correct ? | 4 Yes | 0 No |
Answer / dhivya
when large amount of data required in database we need to find important data.
In normalization there will be important primary keys that must merge together so that we kind find the relations of the keys.
Eg. trans Id,video,cust ID
cust ID be the primary key in customer table
eg. cust ID, name, address, phone no, mail id
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / rizwana
To decompose a large relation into two or more relations then we can use normalization
Is This Answer Correct ? | 0 Yes | 0 No |
What are the key differences between SQL and PL SQL?
What is a database link?
what is the difference between blob and text? : Sql dba
What is procedure and function?
Types of cursors and explanation each of them ?
what is the difference between union and union all? : Sql dba
How do I view a sql trace file?
how will u find statistics of a database objects?
How many developers work on postgresql?
What is a full join?
what are all different types of collation sensitivity? : Sql dba
What is difference between CHAR and VARCHAR2?What is the maximum SIZE allowed for each type?