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You write data validation code in your user interfaces to provide a good user experience. Then you write similar validation code in your services because other clients may not implement those validations in the future. Then you write the same data validations again in the database, well, let's face it, because DBAs are justifiably paranoid about the quality of their data. During this talk, Kevin Hazzard will show you how implement your data validations in a way that they can be shared across all the tiers of your enterprise applications.