what is the difference between business object, business engine and business entity and business rules

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I was reading an article that refers to the following but did not have any description about what these are actually. Can anyone help me understand these w.r.t software architecture/design? Thank you.

  • business objects
  • business engines
  • business entities
  • business rules
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Neil McGuigan On

Business Object and Business Entity are probably the same. They are computer models of things that are important to a business, such as a Sales Order.

A Business Rule is something like this: if orderQuantity > 10 and customerCountry = USA then discount = 0.10

Business Engine probably means computer code to validate a business object or to evaluate a business rule, an example being JBOSS Drools.