hi dolly,
For Personal Administration Infotypes.
Goto..T-code......PM01->Enter Infotype No-> like 1001->Click on Technical Attributes Button->Select Infotype No->Click on Details or CtrlShiftF2 and you can see Database table and double clik on the table name you can see details.
for org management infotypes.
Goto..T-code......PPCJ->Enter Infotype No-> like 1001 Click on Check Button->a popup window will show the detail information table, structures & Function modules involved & which can be used to retrie data
or
Go to t code SE11 or SE 16 and than u can key in PA(infotype number )for pa infotypes for OM key in HRP(Infotype number).to findthe infotype number of OM infotype go to T code OOIT.