Hydro4GE provides custom software, web and interactive
marketing solutions. We also sell and maintain Pario, a tool for developing and maintaining web-based applications.

A Remarkable Development


When it came time to experience Pario first-hand in the Online Development Environment (ODE), I thought I knew what I could expect – instead, I was blown away. When I think about Pario, the following words come to mind: quick, easy, powerful, and ground-breaking. And that’s exactly how I would describe my experience in the [...]



Schema Evolution in Pario


The business needs served by a database may change often during its lifetime. On such occasions, it becomes necessary to modify the structure of the database in order to adapt it to its new requirements. This is called database schema evolution. Effective support for schema evolution is challenging because changes to schema must be propagated [...]