The SVO EXPORT Herbig AeBe SSAP service gives access to a homogeneous spectroscopic database of HAeBe stars. It consists of 337 multi-epoch optical spectra of 38 object observed by the EXPORT consortium (Eiroa, C., Alberdi, A., Camron, A. et al. 2000, ESASP, 451, 189) in 1998/1999.The multi-epoch observation is a useful approach for understanding the origin of the CS lines and their variability, and to establish distinctions in the physical processes operating in pre-main sequence stars.