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what are scenarios when dbms should not be used ?

Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 asked

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3 Answers
Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 answered

1. High initial investment in hardware, software, and training 2. Generality that a DBMS provides for defining and processing data 3. Overhead for providing security, concurrency control, recovery, and integrity functions.

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Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 answered

When not to use a DBMS Main costs of using a DBMS: - High initial investment in hardware, software,training and possible need for additional hardware. - Overhead for providing generality, security, recovery, integrity, and concurrency control. Generality that a DBMS provides for defining and processing data. When a DBMS may be unnecessary: If the database and applications are simple, well defined, and not expected to change. If there are stringent real-time requirements that may not be met because of DBMS overhead. If access to data by multiple users is not required.

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Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 answered

In spite of the advantages of using a DBMS, there are a few situations in which such a system may involve unnecessary overhead costs, as that would not be incurred in traditional file processing. The overhead costs of using a DBMS are due to the following: 1. High initial investment in hardware, software, and training 2. Generality that a DBMS provides for defining and processing data 3. Overhead for providing security, concurrency control, recovery, and integrity functions. Additional problems may arise, if the database designers and DBA do not properly design the database or if the database systems applications are not implemented properly. Hence, it may be more desirable to use regular files under the following circumstances: 1. The database and applications are simple, well defined and not expected to change. 2. There are tight real-time requirements for some programs that may not be met because of DBMS overhead. Thanks

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