Data abstration

Question

Hi in sql server what is three levels of data abstraction ? Thanks

Satyapriya Nayak · Answer

Hi Arjun There 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. Thanks

Vulpes · Answer

Check this link: http://www.dotnetfunda.com/interview/exam2043-what-are-the-three-levels-of-data-abstraction.aspx