How many types of data independence have, Database Management System

Types of data independence

Data independence can be classified into the following two types:

Physical Data Independence: This means that for any change made in the physical schema, the requirement to change the logical schema is minimal. This is practically simpler to achieve.

Logical Data Independence: This means that for any change made in the logical schema, the requirement to change the external schema is minimal. As we shall see, this is a little complex to achieve.

 

Posted Date: 7/26/2013 5:33:59 AM | Location : United States







Related Discussions:- How many types of data independence have, Assignment Help, Ask Question on How many types of data independence have, Get Answer, Expert's Help, How many types of data independence have Discussions

Write discussion on How many types of data independence have
Your posts are moderated
Related Questions
Database Recovery And Security Introduction In this part we will introduce two main issues relating to database management systems. A computer system suffers from dissi

describe objectivde of file organisation

what is check point in database management system

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

What is a view? How it is related to data independence? A view might be thought of as a virtual table, that is, a table that does not really exist in its own right but is inste

Many-to-many : Entities in A and B are related with any number of entities from each other. Example: Taught_by Relationship among course and faculty. One faculty member ca

When a function module is activated syntax checking is performed automatically. YEs, a function module is activated syntax checking.

Describe disk manager and their work? Disk Manager: Responsible for fetching data regulated through file Manager from disk storage within Main memory and deciding what data to

What is a records management consultation? Our organization is an authority for disseminating your specific requirements and giving you with a solution to effectively manage yo

What is a foreign key, and what is it used for? A foreign key is used to establish relationships between relations in the relational model. Technically, a foreign key is a colu