The development of many enterprise applications starts by designing the database. For a bottom-up development approach this is crucial step of application development, since it influences further development. This step is followed by mapping database relational technology to an object-oriented technology and creating a link between them. NConstruct Lite is a wizard-like tool for creating application's data layer source code for NHibernate object/relational persistence and query framework. NConstruct Lite examines database's metadata and creates NHibernate HBM files, entities' source code, Microsoft Visual Studio project file, and some optional helper files. NConstruct Lite is a derivative of more powerful NConstruct tool. Full versions of NConstruct software produce not only object-relational mapping source code but also a fully operational client-server enterprise application for managing and presenting the data from a database in a matter of minutes.