An electronic database can contain so much data that maintaining file integrity can become a problem ultimately causing data degradation. Manual databases become harder to accurately search when they become large.
what are the disadvantages of centralized database system
Paper-based database is a collection of data on paper. There are many disadvantages when using paper-based database, some of the disadvantages are: Difficulty in sorting data, changes are done manually, no security, difficulties in sorting data.
it is time consuming
Disadvantages of Hierarchical model are as follows: implementation complexity, database management problems, lack of structural independence and operational irregularity.
When migrating a database, you may lose information during the switch-over
No one knows
it might get delete
Expensive to set up.
discuss database and field functions
Relational database is the database that stores data in the database in the form of table that are related to other tables. RDBMS is one of the most widely used Database.
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if the computer crashes you can't use it.