Disadvantages of Database Management System (DBMS)

Initial investment is high for implementing DBMS.
Proper training is required for staff to work properly in database system.
When some fault occurs in one part of the database it affects the other parts as well.
It is complex to understand and implement.
Overhead cost for providing security, recovery, and integrity functions.
Cost for the maintenance of the hardware, software, backup, recovery and its upgrade remains forever.
Problem arises if the database designers and DBA do not properly design the database or if the database application systems are not implemented properly.

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