cognos to oracle reports movement - technical perspective and approach

dear friends and mentors ,

I have to undertake an activity where cognos reports such as below :

 

Inventory Cycle Count Accuracy [Planner Code] (ICC 028 TCO Operational)

Inventory Cycle Count Actual vs. Expected (ICC 027 TCO Operational)

Inventory In Transit Details (IIT 034 TCO Operational)

Inventory In Transit Value (IIT 024 TCO Operational)

Inventory Transaction Account Details (TRX 033 TCO Operational)

Inventory Transaction Details (TRX 018 TCO Operational)

Inventory Transaction Details [Athens] (TRX 001 TCO Operational)

Inventory Transaction Lot Split Merge Details (TRX 025 TCO Operational)

Inventory Transaction WIP Assembly Completion (TRX 008 TCO Operational)

Inventory Transaction WIP Assembly Completion by Commodity (TRX 054 Operational)

are to be migrated to oracle ERP 11i production instance itself. this will involve creating rdfs and rtfs  to display the information as displayed by above reports. However I am not very clear regarding the approach that i should take for accomplishing this , for example , my questions are :