BW 3.0 to BI 7.0

Hello Gurus,

Well i m certified in BW 3.0 (C_TBW50)

Now I am planning to appear for Delta Examination. I went through the site. But 2 Delta exam confused me.

C_DBW45_04 - https://websmp105.sap-ag.de/~sapidp/011000358700003594802004E

C_DBW30_04S - https://websmp108.sap-ag.de/~sapidp/011000358700003024882006E

if you go to BI 7.0 certification page

https://websmp105.sap-ag.de/%7Esapidp/011000358700003602892006E

you could see 2 delta exam which is almost same !!!!!!!!!!!

can anyone help me out here....I think _04S is the right one....so which is the other one?

Plz help

thanks