10. Types of primary keys: Simple

There are two types of primary keys:

  1. Simple
  2. Compound or composite

simple primary keySimple primary key


A simple primary key is made up of a single field only.


For example, 'customer ID' in the example on the right would be classed as a 'simple primary key'



challenge see if you can find out one extra fact on this topic that we haven't already told you

Click on this link: Simple Primary Key