abstraction is show nonessential data to user ,
Data abstraction is the reduction of a body of data to a simplified representation of the whole. Data abstraction is usually the first step in database design in order to create a simplified framework that can be added to in order to complete the database.
duties of a creditors clerk
no
what is duty and responsbility of project clerk
what is duty and responsbility of project clerk
You do everything. From selling stuff to warehouse duties to cleaning duties to delivery duties to receiving checker duties to product assembly duties. Everything.
Abstraction: Abstraction refers to removal/reduction of irrelevant data or unnecessary data or confidential data from a Class. Data hiding: Data hiding is a feature provided by the abstraction for hiding the data from the class.
select*from stludent
k
== ==
how data are stored would be in a physical layer