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

Dataware house(job scheduling strategy), Define a job scheduling strategy t... 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 pictori

Structure of distributed database, Structure Of Distributed Database: A di... Structure Of Distributed Database: A distributed database system haves of a collection of sites, each of which keeps a local databases system. Every site is able to process local

Database problem in wordpress, Project Description: I am having a random... Project Description: I am having a random problem with my Wordpress site. If I click on "Publish" and "Add new", it takes me to a 404 page not found of /wp-admin/post.php (th

Explain how the object classes are mapped to tables, Explain how the object... Explain how the object classes are mapped to tables. Each object class maps to one or more than one tables in the database. The objects in the class may be partitioned horizont

Assignment - 1 - redoing to improve grades, Assignment #1 Data Management ... Assignment #1 Data Management The questions on this exam are based on the Baxter Aviation case scenario. 1. (5 points) The systems analyst proposes the following two relationshi

What are the responsibility of file manager, What are the responsibility of... What are the responsibility of File manager? File Manager : Manager allocation of space on disk storage and the data structures used to represent within stored on disk. It is a

What is object identity, What is object identity? An object retains its... What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.

Lack of redundancy, Lack of Redundancy We have talked about the problems o... Lack of Redundancy We have talked about the problems of repetition of information in a database. Such repetition should be stay away as much as possible. Let us state once again t

Determine the Disadvantages of file based systems, Determine the Disadvanta... Determine the Disadvantages of file based systems Some of the disadvantages of file based systems are like this: Data redundancy and inconsistency: the dissimilar applic

Transaction, .#question. Discuss the problem which may arise during concurr... .#question. Discuss the problem which may arise during concurrency control and recovery in distributed database which are not encountered in controlized database environment.