[Typo3-dev] getting default database values from an external extension

[Rainer (Rene) Suthoelder]

hi!
using one's own extension, how could you get the default values of a given 
db table?
for example: how could i get the original table values of fe_users, not 
taking into account those additional fields which were added by other 
extensions?

any help appreciated,

rainer