1. Database
- C. J. Date, An Introduction to Database Systems
- Fernando Lozano, EDM/2 - Introduction to Relational Database Design, 
  www.edm2.com
- PostgreSQL Documentation (Core)
  http://emhain.wit.ie/pgsqlman/

2. Possible analytical model to look at:
- El-Yaniv, Competitive Solutions for Online Financial Problems, ACM Computing 
  Survey, Vol. 30, No. 1, Mar. 1998

3. Data Handling
- US Securities and Exchange Commission's Homepage, www.sec.gov/edgar

4. Literature on similar projects
 
5. ECON Reference - 
- Hans van Ees, Gerard H. Kuper, Investment, Finance and the Business Cycle: 
  Evidence from the Dutch Manufacturing Sector