Disadvantages of Database Management System

Disadvantages of Database Management System

There are some disadvantages of database management system A brief description of these disadvantages is as follows

• High Cost

High Cost A complete database management system consists of powerful and expensive computers and application programs. The disk storage requirements for a database system are also high Usually high-performance disks are needed. Sometimes a powerful and dedicated computer system is also required to run the database management system. The need for additional hardware further increases the cost of providing a database management system

• Higher Impact of a Failure

The centralized resource increases the vulnerability of the system.
Since all database users in an organization depend on the database, failure of any one component of the database management system can stop all operations in the organization

• Training of Staff

The organization that uses a database needs to hire people to design and implement a database and to train their staff in the use of the database With rapid changes in technology, people have to
train frequently. This cost of continuous training may be more than the advantage of having the database management system.

• Conversion Costs

Conversion Costs The existing or older system of data management is called the legacy system. It usually consists of a traditional file processing system or an older database technology. The cost of converting an old data management system to a modem DBMS is usually large.

• Need for Backup & Recovery

Need for Backup & Recovery All operations of an organization using a database system depend on the accuracy and continuous availability of data. Therefore, comprehensive procedures are needed to backup data and for restoring a database when damage occurs.

• Need for Data Dictionary

Need for Data Dictionary Data dictionary holds definitions of all of the data items stored in a database. It describes the data type of each data item that is stored it allows the DBMS to keep track of the data. The data dictionary system is installed to maintain a data dictionary.
Data Dictionary System is a useful but very expensive tool. Its cost includes the initial price of its installation and additional hardware requirements