> Define enormous load please - Terabytes?

Could be Megabytes with many hundereds of Users or at the other end; Terabytes with only a handful of Users. Degree of User activity is also important in determining 'enormous load' - you could have 50,000 Users (like the UT) but if 95% of them only visit the site once a year - that hardly constitutes 'enormous load'.

Given that the original question is yours - the onus is on you to supply context, clarification and to qualify your terms.

> Then not a concern. I have other concerns with Visual FoxPro, but also some confidence in my ability to get things done in it.

"Is SQL Performant - All things being equal... can I expect to get similiar performance from MSSQL and Visual FoxPro?"

The general lack of information in your question leads me to think that your confidence 'might' lack foundation. I often wonder why people are so quick to attempt to answer such non-questions - almost all of the gurus on this board are guilty of this.