High Cost
- Disadvantage of DBMS is its high cost of software and hardware.
- For users to use a DBMS they require a high speed processor and huge memory size and also need costly machines to maintain database.
- Highly trained database administrator is needed for using and maintaining the large database systems.
Huge Size
- In the initial stage the size of the database is not big, but when user stores a large amount of data it causes many problems.
- Due to the heavy data, dbms donot provide good results and donot run efficiently.
Database Failure
- In a DBMS system all the data or information is stored in one centralized data base. If this database fails, the data is lost.
Complexity
- For a non technical user, DBMS is so complex. So it is not easy to manage and maintain the database.
- Training is need for users, designers and administrators to efficiently run the database systems.
Increased Staff Cost
- To maintain and manage the database skilled staffs are required. So lot of money needs to be spent for the skilled staffs to be trained.
Requirement of Technical Staff
- A non technical person does not understand the complexity of the database.
- Skilled person with good skills is needed for managing and maintaining the database.
Cost of Data Conversion
- The biggest disadvantage of DBMS is cost of conversion is very high.
- There is a need for skilled, trained and experienced database administrators for conversion of data smoothly.
Performance
- Another biggest disadvantage of database systems is speed of the database for small firms and organizations is very slow.
- Hence the performance of database in these organizations is poor.
