>Hi,
>
>According to couples of books and articles I read, Tax is a Business object. Then does price also? How to identify?
>
>Any guildline/articles/books that help me to identify business object?
>
>Thank you

Take this with a grain of salt, but here it goes... ;)

I take it that Tax is a business object because there are business rules that must be followed (those would actually be coded into the business object for implementation when called) depending on other factors, such as the particular tax rate at different locations. Now, price would could be implemented as a business object if an item on sale were to be sold at different "prices" depending on a set of definable conditions, which would be the business rules, that the owner of the establishement could set, otherwise, if the price is fixed then it would not (should not) be made into a business object.

You might want to check out Hentzenwerke's book on Advanced Object Oriented Programming ...

Good luck to you, but check out my tag before you say Ahhhhh! :)

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PabloSr, Still Learning!
DevDBFox