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2020 | OriginalPaper | Chapter
10. Bean Validation
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Abstract
One of the most important pieces of any data-using application is data validation. It is imperative that one validates data before it is inserted into a database in order to maintain integrity. There are a number of reasons to validate, the most important being security purposes, data consistency, and proper formatting. Many web applications use validation in the presentation layer via JavaScript for validation of form data and also in the persistence layer. However, sometimes JavaScript can become problematic in that the code can become unwieldy and there is also no guarantee that it will execute. It is oftentimes found to be a good idea to perform validation within the domain model, although this can cause code clutter.