This document discusses table-valued parameters (TVPs) in SQL Server, which allow multiple rows of data to be passed to a stored procedure at once. It notes that TVPs were introduced in SQL 2008 to speed up procedures by replacing iterative calls to the database and XML parsing. The document provides information on why TVPs were created and how to use them, including how to create a TVP type, grant permissions on it, modify procedures to use the type, and handle database schema changes.