1) Use noun / verbs analysis and search class
The first step in the noun / verb analysis method is to collect relevant information as much as possible. The source of the right information is:
Supplemental requirements Specifications (if any) use case item vocabulary any other information resource (architecture, vision document, etc.)
2) After collecting the document, use a very simple method to analyze him, highlight (or record some other method):
Nouns - for example: flight noun phrases -, for example, flight number verbs -, for example, assign verb phrases --- For example, verify credit card
Nouns and noun phrases can represent classes or class properties. Verbs and verb phrases can represent classes' duties.
2) Use CRC analysis class to find classes
CRC - represents the world's most powerful analysis tools in the world.