There are three levels of data abstraction:
<> Physical Level: It is the lowest level of data abstraction. It shows how the data is actually stored in memory.
<> Logical Level: It includes the information that is actually stored in the database in the form of tables. It also stores the relationship among the data entities in relatively simple structures. At this level, the information available to the user at the view level is unknown.
<> View Level: It is the highest level of data abstraction. The actual database is visible to the user. It exists to ease the availability of the database by an individual user.
Posted Date:- 2021-09-30 00:20:01