Flat DB seeking speed

[Jia Lu]

Hello all

 I see there are lots of flat db or db-like modules in the standard
python modules.
 What about the keywords seeking speed of them ?

 (I want to put about 10000 articles with 10000 IDs, and I can do
searching keywords with them)

 The db-like modules are :
 dbm, gdbm, dbhash,anydbm,
 pickle(cPickle), shelve, marshal

 Any advice? Thank you.

Jia Lu