What is - fnd_standard.set_who
This is API provide by Oracle to return you the values of WHO columns .WHO columns are columns that tell you who has
1.Created/Update the value in a tables.
For all the standard table provide by in Oracle Applications , oracle has following WHO columns
1.Created_by
2.Last_Updated_by
3.Creation_date
4.Last_Update_date
5.Last_Update_login