Demand management

You will find demand management in the subject Economics if you study a degree in the Finance, Accounting, Commerce, Business Management, and many other related disciplines.
In Economics, supply and demand describe the market relation between prospective sellers and buyers of goods. The supply and demand model determines price and quantity sold in a market. This model is fundamental in microeconomic analysis, and is used as a foundation for other economic models and theories. It predicts that in a competitive market, price will function to equalize the quantity demanded by consumers, and the quantity supplied by producers, resulting in an economic equilibrium of price and quantity. The model incorporates other factors changing equilibrium as a shift of demand and/or supply.
Of course, nearly all the Universities and related Colleges in Hong Kong offer the subject in the general/specialized learning levels in their related degree/diploma/certificate programmes.

Please refer Supply and Demand in:

http://en.wikipedia.org/wiki/Demand_(economics)

http://zh.wikipedia.org/wiki/%E4%BE%9B%E7%BB%99%E5%92%8C%E9%9C%80%E6%B1%82


I hope I can help you.