Components

The different components of Ab initio architecture are:-

1.Dataset Components
2.Database Components
3.Partition Components
4.DePartition Components
5.Sort Components
6.Transform Components


Link:   http://ab-initio-tutorials.blogspot.com/2010/01/components.html

Advanced Concepts:  http://ab-initio-tutorials.blogspot.com/2010/01/advanced-concepts.html