In this paper we discuss warehousing systems and present a classification o
f warehouse management problems. We start with a typology and a brief descr
iption of several types of warehousing systems. Next, we present a hierarch
y of decision problems encountered in setting up warehousing systems, inclu
ding justification, design, planning and control issues. In addition, examp
les of models supporting decision making at each of these levels are discus
sed, such as distribution system design, warehouse design, inventory manage
ment under space restrictions, storage allocation, and assignment and sched
uling of warehouse operations. (C) 1999 Elsevier Science B.V. All rights re
served.