The best database for researching the demand for a product or service is Mintel, the marketing database. Each Mintel report has a section on consumers and their preferences. You can find demographic information about consumers of the product such as age, gender, race or income levels. You can also find information about attitudes and reasons for choosing one product over another.
You can also find information in the two main business databases, Business Source Complete and ABI Inform Global.
This database provides access to market research reports covering US and international marketplaces. Each report combines data & analysis of the competitive landscape, market-share analysis and consumer profiles. Complex demographic issues are broken into easy-to-understand sections, explaining consumer behavior and demonstrating the structure of the market.
This database provides business reports in five categories: industry market research, industry risk ratings, company research, global industry research, and economic and demographic data. The industry intelligence reports include key statistics, market characteristics, industry segmentation, industry conditions, key competitors & market share, performance analysis, key success factors, and 5 year forecasts & forecast analysis. This also includes many public company research reports on US, Canadian, and globally traded public companies.