What is the difference between FastLoad and MultiLoad in Teradata?

What is the difference between FastLoad and MultiLoad in Teradata?

FastLoad and MultiLoad are two popular Teradata utilities used for loading data into Teradata tables. While both tools have similar functionality, there are some key differences between FastLoad and MultiLoad:

FastLoad

• FastLoad is used for loading data into empty tables quickly and efficiently.
• It loads data into Teradata tables in a single, fast operation.
• FastLoad uses multiple sessions to load data in parallel, resulting in faster data loading speeds.
• It does not support updating or deleting existing data in the target table.

MultiLoad

• MultiLoad is used for loading, updating, and deleting data in Teradata tables.
• It supports various types of operations, including INSERT, UPDATE, DELETE, and UPSERT.
• MultiLoad processes data in multiple phases, allowing for more complex loading and manipulation operations.
• It is slower than FastLoad but offers more flexibility in terms of operations that can be performed.

In summary, FastLoad is best suited for quickly loading large volumes of data into empty tables, while MultiLoad is more versatile and can be used for a wider range of data loading and manipulation operations.