BMW 525i Door Lock Not Working

To Whom It May Concern: My Alarm Went Off Last Night And It Totally Drained My Battery. As A Result, I Am Unable To Unlock My Car Door...

I Attempted To Lock My Car, Usually All Locks Lock At The Same Time When I Lock With Key. This Time Only The Lock In The Door Which I Was...

I Own A 1990 Bmw 525i. During The Summer I Was Driving Another Car So The Bmw Sat All Summer. As You Could Guess, The Battery Went Dead....