Not meant to be this. It's there to validate data coming from an untrusted source to fit to your data model. The best usecase is a document database (like Mongo

Not meant to be this. It's there to validate data coming from an untrusted source to fit to your data model. The best usecase is a document database (like MongoDB, CouchDB) that uses JSON as data representation. The logic and validation has to be done somewhere and to have standardized way to define constraints is a good start.