With custom datasets you can easily build exactly the kind of synthetic data you need. You can build datasets that looks like your existing production data, or you can easily create protoypes that will help you develop faster. We also have plenty of pre-defined datasets that are based on popular sample databases from different database vendors and communities. We have sample databases from Microsoft (AdventureWorks), Oracle, DB2 and Postgres. We also have popular sample databases such as Sakila (Pagila) and more.