Data Tier Component Builder is an object modeling tool that is used as an Add-Ins MS VB 6.0. Data-Tier Component Builder allows to design of any system in terms of an object model, to automatically generate Visual Basic 6.0 data-tier code from the design model and to automatically create Repository database based on either Microsoft Jet (MS Access) or Microsoft SQL Server. The is an opportunity of a print o the documentation on object model.