a)
b)
c)
d)
Question 1
a)define what DBMS?
-is a software system that enables users to define,create and maintain the database and provides control access to this database.
b)give two advantages of using a DBMS?
-control of data redundancy
-data consistency
c)explain what are the 3 main database characteristic?
-persistent
data that repetitively used for example data about customers,employees and inventory are usually stored on stable storage such as magnetic disk.
-shared
database can have multiple uses and shared by multiple users. Many users can access a database simultaneously.
-interrelated
data stored as separate units can be connected to provide a whole picture. Databases contain both entities and relationship among entities.

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