logo
  • About us
  • Services
  • Products
  • Work
  • Contact

Feedback

In Focus

  • Flash XML slideshow
  • Database training

1.3.05. Relational cardinality

  • 1:0 relationships
    • Single entity
    • Uniquely indentifiable
    • Candidate keys
    • Primary Key
  • 1:1 relationships
    • Two entities, A and B
    • 1 A relates to 1 B and vice versa
  • 1:N relationships
  • M:N relationships
‹ 1.3.04c. Pointing mechanism with structuresup1.3.06. Relationships in the relational model ›
  • s5 slideshow
 

 

 

Copyright 2007 Lightenna Limited

  • About us
  • Services
  • Products
  • Work
  • Contact