Hi Praveen
Content from PDF and Excel wont behave in the same manner when being copy pasted.
If I understand you correctly...
When you copy paste from Excel, the text shows up as tab delimited text in FrameMaker (...normalt text), right?
You can select that text and go to Table->Convert to Table and have the text turned into a table again.
If you are using the road I have shown with the maker.ini having TEXT last in the line, you should be able to copy tables from Excel into FrameMaker and have them work as tables. But not necessesarily tables from PDF files, because there is no way of telling how that data has been made.