Visual Basic is an event-driven programming language developed by Microsoft, which includes an auxiliary development environment. By any standard, VB is the most widely used language in the world-not only the number of developers who praise VB, but also the number of developers who complain about VB. It comes from the BASIC programming language. There are two VB programming questions in the National Computer Rank Examination.

VF is the abbreviation of database software visual foxpro, also called VFP. It is a database management system, an integrated programming language and a front-end tool for developing small databases. Visual in Visual FoxPro means "visualization", which makes the application designed in Windows environment achieve the effect that can be seen immediately.