Opening the paper…
Database Management Systems, Quiz 1
Which among the following levels of abstraction describes the information about the data stored in the database and the relationships among the data fields?
Which among the following levels of abstraction describes the information about the data stored in the database and the relationships among the data fields? The ability to modify the physical schema without changing the logical schema is known as \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Which among the following is used for accessing and manipulating the data organized by the appropriate data model?