1)   Visual Dorp Filter V.6.1
Vdf objects are set of date-centric filtering objects and provided to help speed the process of filtering application development.VCX library for VFP8,VFP9 development views and reports.
DORP, Data Ortogonale Projection, DORP-VDF, VFP8, VFP9, Visual FoxPro, Visual FoxPro8, Visual FoxPro9, VFP, Structure Query Language,