How does BULK INSERT work internally?

Question

Could someone please explain how does BULK INSERT internally work and why is it much faster than the normal INSERT operations ?

Regards, Shishir.

Answer 1

Internally, it converts to an OLEDB recordset, then loads the table.

I've not given it much thought, but I'd assume this is quicker when run on the SQL Server box rather than the client. Plus you can manage constraints that you can't with normal INSERT

From BOL