A marketing analysis is a study of the dynamism of the market. It is the attractiveness of a special market in a specific industry. Marketing analysis is basically a business plan that presents information regarding the market in which you are operating in. It deals with various factors.
Data Warehouse is constructed by integrating data from multiple heterogeneous sources. It supports analytical reporting, structured and/or ad hoc queries, and decision making.
Qualitative forecasting is subjective and it depends on the opinion of the customer. It is usually applied to the intermediate or long-range decisions. Quantitative forecasting depends on the past and present data to predict the future condition of the product. If there are no data available, or if the data available are not relevant to the forecasts, then qualitative methods must be used.