relational db failed to write data

[shashanksen]

The relational_db_api.py file is not working fine on python3 the issue is the code at line number 457:for col, value in record.iteritems()
the iteritems() is used in only python version2 not compatible with version3 and above,
kindly change the same with "record.items()"

I am using the IO in my development for now wanted to take it in production can't debug it manually every time as it will be running on docker and take the api from pip install not from my local.