View of Data
View of Data:- It refers that how database is actually stored in database, what data and structure of data used by database for data. So describe all this database provides user with views and these are
Data abstraction:- Database systems are made-up of complex data structures. The developers hide internal details from users. This process of hiding details from user is called data abstraction.
Physical level:- This is the lowest level of data abstraction which describe How data is actual stored in database. This level basically describe the data structure and access path /indexing use for accessing file.
Logical level:- The next level of abstraction describe what data are stored in the database and what are the relationship existed among those of data.
View level:- In this level user only interact with database and the complexity remain unviewed . Users see data and there may be many views of one data like chart and graph.