Bulk data import is a process to load large amounts of data into a database in a relatively short period of time. When you need to load a lot of data all at once, a typical database inserts one row of data at a time, which is inefficient.
Bulk data import allows you to import or export large amounts of data relatively quickly. With bulk import operations, data is inserted through a variety of more efficient methods.
Bulk operations might bypass triggers and integrity checks such as constraints. Bypassing these slow processes can significantly improve data loading performance, resulting in the operation taking much less time.
Instructions for Installing Bulk Data Import.