Databases

• Articles
  • Improving the performance of CGI compliant database gateways
• Data Models
  • Entity-relationship model
    • Peter Pin-shan Chen, The Entity-Relationship Model: Toward a Unified View of Data (1976)
  • Relational Model
    • Relation
    • Relational Algebra
      • Codd's theorem
    • Relational Calculus
      • Tuple relational calculus
      • Domain relational calculus
• Free Databases
  • Mini SQL
    • Huges Technologies - developers of mSQL
    • mSQL - A Lightweight Database Engine for Web Servers
    • MiniSQL and W3-MSQL
  • PostgreSQL
• Relational Databases
  • SQL
    • Introduction to Structured Query Language - James Hoffman
    • SQL Tutorial
      • GROUP BY
    • Tips
      • Difference between DISTINCT and GROUP BY - Distinct vs Group By
      • Why does SQL force me to repeat all non-aggregated fields from my SELECT clause in my GROUP BY clause?
• Standards
  • ODBC
• Vendors
  • Oracle Corporation
  • Computer Associates (Ingres)

Last updated on
by Ian Glendinning