BA Vs PM

Role are totally different. So the best is have,the roles performed by different people. But you will find lot of business analysis implementation where both roles are performed by the same person. Remember that the,role was formally defined in 1999 and the IIBA started in 2003 so the first BABOK was published near that date. In fact the BA role was drastically evolved from 1999 up to date almost each year. In the begining was IT related but quickly it evolved ti strategy related.

You are totally right Sergio.

Thank you very much,Rami. My intention is to put all I know on the table because whem more people have more information I believe it is th best for all.

BA's develop product requirements, PM's develop project requirements. So to answer your question, yes a PM could effectively do the role of a BA. However in almost every circumstance it's better to have someone that is specialized in developing product requirements in order to make sure that you have what the client is asking for accurately measured.

The article stated above for @Anupam is not exactly right. There are better references outside there. The answer is YES as @Andrew stated above. I am working with this from the genesis of business analysis discipline with the IIBA and now with the PMI. In the begining, most of us that are project managers becomes business analyst. The risk to perform both roles is do not loss focus: business analys focus is solution while project manager focus is the process to create the solution (project). From solution requirements (mainly product requirements) the project requirements are created.