When developing software, you have to make decisions regarding how best to take some system in the real world and model it using modeling techniques.
This involves deciding which tables to create, what columns they will contain, as well as the relationships between the tables.
A well-designed database takes time and effort to conceive, build and refine.
The benefits of a database designed according to the relational model are as follows.
- Data entry, updates and deletions will be efficient.
- Since the database follows a well-formulated model, it behaves predictably.
- Since much of the information is stored in the database rather than in the application, the database is somewhat self-documenting.
- Changes to the database schema are easy to make.
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