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CHAPTER10

Documenting an Existing Database

It is important to have documentation for your databases. If you do not understand your data, you cannot keep it up to date, secure, of good quality, and so on. In addition, changing the data structures based on current requirements is impossible if you do not understand what you are changing. Documentation is also vital when addressing problems related to data, such as poor performance.

Surprisingly, often databases don’t have any documentation. This could be because the database came with an application product and the vendor did not deliver any documentation for the database. In these cases, it might ...

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