What is the use of DataLoader in Salesforce?

Hello Anurag,

Data Loader is a client application for the bulk import or export of data. Use it to insert, update, delete, or export Salesforce records

Uses:-

1. You need to load 50,000 to 5,000,000 records. Data Loader is supported for loads of up to 5 million records.
2. You need to load into an object that is not yet supported by the import wizards.
3. You want to schedule regular data loads, such as nightly imports.
4. You want to export your data for backup purposes.

Thanks.