I'm far from a bcp expert but here's my POV on it.

BCP is the command line utility for bulk copying in and out of SQL Server. BCP has been part of SQL Server for several versions. bcp copies a database table to or from an operating-system file in a user-specified format. The syntax takes some getting used to but when that's been figured out, it works great.

It is often run outside of SQL Server in something like a DOS batch file. It can also be run inside SQL server using xp_cmdshell.

More recent versions of SQL Server include DTS (data transformation services) that can also be used to load data.

Inside FoxPro, you can load data using either Remote Views or SQL Pass-Through (SPT) technology using commands like SQLCONNECT,SQLEXEC, INSERT INTO, and AERROR.