Answer Posted / vans

The above posted details are perfect.

Here to load the data from legacy system to your staging
table you can use SQL LOADER.

Once loaded to the table run the package to do the required
validations.

We can use two approaches to load the data into base table.
1)Using open interface
2)Use API.

1)Using open interface
We need to place the validated date from staging table to
standard interface table and then run the standard
interface program to place the data in Base table

2)Use API

In this case we do not use interface table.We take the data
from staging table validate and call the standard API which
will place the data into base table.

Here, to the API we need to pass the required IN parameter
from the staging table once it being validated.

For example in HRMS the employee conversion we can call the
below API to create employee
hr_employee_api.create_us_employee

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