Abstraction is the process of recognizing and focusing on important characteristics of a SITUATION or object and leaving/filtering out the un-wanted characteristics of that situation or object.

Abstraction is the basis for software development. Its through abstraction we define the essential ASPECTS of a system. The process of identifying the abstractions for a given system is called as Modeling (or object modeling).

Three levels of data abstraction are:

1. Physical level : how the data is STORED physically and where it is stored in database.
2. Logical level : what information or data is stored in the database. EG: Database administrator
3. View level : end users work on view level. if any amendment is made it can be SAVED by other name.

Abstraction is the process of recognizing and focusing on important characteristics of a situation or object and leaving/filtering out the un-wanted characteristics of that situation or object.

Abstraction is the basis for software development. Its through abstraction we define the essential aspects of a system. The process of identifying the abstractions for a given system is called as Modeling (or object modeling).

Three levels of data abstraction are: