2011 Client installation --- SQL BC still needed?

I am doing a silent, scripted installation of our EPDM 2011 clients. In my previous scripts I have a step where I install  SQLServer_2005_BC. (I've forgotten, or never knew, why we do that, but we do...)

Is that package still required for EPDM 2011? This would be 32-bit and 64-client on both Windows XP and Windows 7.

SolidworksSolidworks Pdm enterprise Pdm