Data independence seems that "the application is independent of the access strategy and storage structure of data". In other words, the ability to change the schema definition in one level could not change the schema definition in the next higher level. Two kinds of Data Independence:

• Physical Data Independence: Change in physical level could not affect the logical level.
• Logical Data Independence: Change in logical level could affect the view level.

 

 

 

Posted Date: 7/30/2012 1:35:59 AM | Location : United States

Ask an Expert

Related Discussions:- Define data independence, Assignment Help, Ask Question on Define data independence, Get Answer, Expert's Help, Define data independence Discussions

Write discussion on Define data independence
Your posts are moderated

Write your message here..

Related Questions

Explain briefly concurrent task by taking an example, Explain briefly concu... Explain briefly concurrent task by taking an example. Concurrent Task- The concurrent occurrence of more than one event is called concurrent task. Operating systems can handl

Database administrator, The Database administrator (DBA) uses the data dict... The Database administrator (DBA) uses the data dictionary in each phase of a database life cycle, beginning from the data gathering phase to the design, execution and maintenance p

List and describe the different types of indexes, Question 1 Indexes are o... Question 1 Indexes are ocasionally defines on a single field of a file called an indexing field. List and describe the different types of indexes Question 2 Consider a book i

Datawarehouse, How to define a job scheduling strategy that will meet busin... How to define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a

Explain generalization and aggregation in e_r diagram, Explain the concept ... Explain the concept of generalization and aggregation in E_R diagrams. Give one example for each one of them? Generalization: Consider extending the entity set account throug

What are the acid properties?, Question 1 What are the advantages of DBMS ... Question 1 What are the advantages of DBMS approach in managing data? Question 2 What are the services provided by a database system Question 3 List and briefly describe

What are the reasons of bucket overflow, What are the reasons of bucket ove... What are the reasons of bucket overflow? Explain any two methods for solving this problem. Ans:  It is general for file structures to be divided into equal-length partitions, k

Explain the dependency relationship of object oriented, Explain the depende... Explain the dependency relationship of object oriented A dependency is a relationship which states that a change in specification of one thing can affect another thing, but n

Write short notes on relational model, Write short notes on relational mode... Write short notes on relational model   The  relational  model  uses a  collection of  tables  to show  both data  and the relationships between those  data.  The relational mo

Explain clustering file organization, Explain Clustering file organization ... Explain Clustering file organization (i) Determine if a record of file is physically ordered on a nonkey field - that does not comprise a different value for each record - that