about DIR and original file correlative table?

Hello,

I want to retieve documents' origial files in batches whether check in kpro or not from correlative table(DRAW,DMS_PH_CD1,DMS_DOC2LOIO,DMS_PHIO2FILE,DMS_DOC_FILES,DMS_PHF_CD1,etc.),

but I didn't wholely understand the relation about document tables.how to know that original file 's statu is check in or check out or initial.

please help me.

thank you.

best regards.

pangyanting.