What is the purpose of SqlBulkCopy in SQL Server?

SQLBulkCopy is a class in SQL Server that is used to efficiently transfer large amounts of data from one source to another in bulk, without the need for individual INSERT statements. This can improve performance when inserting data into database tables.

The purpose of SQLBulkCopy includes:

1. Insert data in bulk quickly: Rather than inserting data one by one using INSERT statements, using SQLBulkCopy allows inserting a large amount of data into the database at once, thereby improving the speed and efficiency of data insertion.
2. Effortlessly import and export a large amount of data with SQLBulkCopy, whether it be transferring data between database tables or importing data from a CSV file into a database table.
3. Data migration between databases: By using SQLBulkCopy, data from one database can be easily transferred to another database, facilitating database upgrades, merges, or duplication.
4. Database backup and restore: SQLBulkCopy can efficiently backup data from one database to another database or file, and restore backup data swiftly back into the database.

In conclusion, SQLBulkCopy is an efficient tool for bulk copying database data that can improve data operation efficiency and performance in scenarios such as inserting, importing/exporting, data migration, and data backup/recovery.