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Explain the commonly used modeling notation. [Hint Unified Modeling Language(UML) and Object Role Modeling(ORM)]Some of the commonly used modeling notations are:
a) UML: Unified modeling language is an object oriented way for describing a system based on data. It consists of class diagrams along with relationships and multiplicity of those classes.
b) ORM: Object role modeling, is used to design database models. It is often used to depict at a conceptual level like E-R models.
c) OPM: Object process methodology, is a way to depict objects, object interaction all together in one diagram instead of having separate diagrams as in case of UML.
d) E-R model: Entity-relationship model is used to represent a conceptual view of data in a system. It is mainly used to model databases and data driven systems.
e) BPM: Business process modeling is used to represent and identify various processes and their flow in a system. It is a very good requirement elicitation technique and if often used to understand a system.
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