Ans:
        1. Perform the following while involving in data load testing:
        2. Know about the data tables, columns and associated constraints, data types
        3. Know the target data tables, columns, data types, constraints
       4. Check the source and target compatibility
        5. Open the corresponding DTS package by using SQL Enterprise manager and execute the DTS package, in case your database server is SQL Server
        6. Compare the source data columns and target data columns
       7. Cross check the number of rows in both source and target
       8. Update the source data and observe the change in reflecting in target or not
       9. Check the junk characters and NULLs in the columns of tables.