Advantages of introducing and using DBMS

There're a lot of advantages of DBMS:
Efficient data access: Because the company usually store a great deal of information for access, it's very important for the company to accelerate its data access. Tbe DBMS helps the company to store and retrieve data efficiently. For example, the sale department uses to notify customers of unavailable products by using SLIB. BADORDR. (http://www.tau.ac.il/cc/pages/docs/sas8/accdb/z0245491.htm)

Data integrity and security: The DBMS will improve the constraints on the data after the data was accessed through the DBMS. For example, the manager will check the department budget from DBMS before they inserting salary information to make sure the department budget is not exceeded.

Providing Multiple User Interfaces: For example, the DBMS provide the query languages, probramming languages interface, forms, etc.

Lower user training costs: Such a system is easier for user to learn and reduce the training costs.

Less storage: Because people stired the data only once, the redundant of data will be minimized.

Reference
Student Guide (2008) ADVANTAGES OF A DBMS
http://estudents.co.cc/database-management-systems/advantages
ION503 ADVANTAGES OF USING DBMS
http://www.ii.metu.edu.tr/~ion503/demo/chapter1/chapter15.htm
Blurtit (2009) What Are The Advantages Of DBMS (Data Base Managment System)?
http://www.blurtit.com/q955157.html