what is the purpose of the class diagram and why is it important to identify class early in the Unified Process methodology.

made a case diagram

When describing processes that are not included in a systems analysis, it is a good idea to use structured language. This may be accomplished by considering the use of structured language.

Create an Interaction Model Use Case Model 1. Create use case summaries for a Employee Payroll System, Some suggested names are: Enter employee information, Print employee pay Snub, Perform maintenance, Perform backup, View employee records, etc. 2. Create a use case description for “Print Employee Pay Snub"...You should have several use case descriptions but only list one for this assignment. 3. Create a Use Case diagram for an Employee Payroll System, Include at least 3 actors. Sequence Model 1. Create a Scenario for a sequence of events that occur during one particular execution the system This should be listed as one of the actors (or whatever you chose to name them) in the use case diagram. 2. Create a Sequence Diagram Note: there should be a Sequence diagram for each Use Case listed in your use case summary, (if there are 4 Use Cases there should be 4 Sequence Diagrams).

You should make an attempt, preferably via the use of ordered English, to describe processes that are not covered in the systems analysis procedure.

Look for methods to describe processes that aren't part of a systems analysis using Structured English, and how you may do so.

Defining a system model seems to be a good aim, but what exactly does it entail? What factors should be considered while creating basic models?

Practice Programming Planning Problems using Object Oriented Design–  Outline the classes and relationships and describe the programming process for an "automatic meeting scheduler using inputs from a calendar database." Use a simplified version of Unified Modeling Language class diagram. You are not writing the code for this, just the design and the algorithm.

Even if the techniques you are attempting to describe have nothing to do with system analysis, you may still give it a go and try to explain them using structured English even though they have nothing to do with it.