Relational Database Management System (RDBMS) Question:

Describe the three levels of data abstraction?

Tweet Share WhatsApp

Answer:

The are three levels of abstraction:

► Physical level: The lowest level of abstraction describes how data are stored.
► Logical level: The next higher level of abstraction, describes what data are stored in database and what relationship among those data.
► View level: The highest level of abstraction describes only part of entire database.

Download RDBMS PDF Read All 98 RDBMS Questions
Previous QuestionNext Question
Disadvantage in File Processing System?Define the Integrity Rules?