Provide ideas/suggestion on How to fetch the non cloud retail application data into Fusion saas HCM

Summary:

We have Legacy non cloud Retail applications data and preparing the reports manually.

Provide the ideas/suggestion on How to fetch the non cloud retail applications data into Fusion Saas HCM and automate the required reports by using BI publisher?? 

What are all the steps needs to consider that and perform to achieve the requirements??

Content (required):

We have Legacy non cloud Retail applications data and preparing the reports manually.

Provide the ideas/suggestion on How to fetch the non cloud retail applications data into Fusion Saas HCM and automate the required reports by using BI publisher?? 

What are all the steps needs to do perform to achieve the requirements??