ACTIVITY DIAGRAMS IN UML Activity Diagrams WHAT IS AN ACTIVITY DIAGRAM? Activity diagrams consist of activities‚ states and transitions between activities and states. Activity diagrams combine ideas from event diagrams‚ Petri nets and state modeling techniques An activity diagram is a special case of state charts in which most or all states are activity states and most or all transitions are triggered by the completion of activities in the source state. What is an Activity Diagram? The
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Entity-Relationship (E/R) Model Dr P Sreenivasa Kumar Professor CS&E Dept I I T Madras Entity-Relationship (E/R) Model Widely used conceptual level data model • proposed by Peter P Chen in 1970s Data model to describe the database system at the requirements collection stage • high level description. • easy to understand for the enterprise managers. • rigorous enough to be used for system building. Concepts available in the model • entities and attributes of entities. • relationships between
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mywbut.com Data Flow Diagrams (DFDs) 1 mywbut.com Specific Instructional Objectives At the end of this lesson the student will be able to: • • • Identify the activities carried out during the structured analysis phase. Explain what a DFD is. Explain why constructing DFDs are important in arriving at a good software design. • Explain what a data dictionary is. • Explain the importance of data dictionary. • Identify whether a DFD is balanced. Structured Analysis Structured analysis
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Problem Solutions 1. Use the following business rules to create a Crow’s Foot ERD. Write all appropriate connectivity’s and cardinalities in the ERD. 1.a. A department employs many employees‚ but each employee is employed by one department. 1.b. Some employees‚ known as “rovers‚” are not assigned to any department. 1.c. A division operates many departments‚ but each department is operated by one division. 1.d. An employee may be assigned many projects‚ and a project may have many employees
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uniforms are not appropriate for ANY high schools . They are extremely expensive and impossible to be afforded by the average high school student salary. Uniforms are very uncomfortable and students should be able to express them self in a positive way using their clothing. First Body Paragraph Topic sentence: Proof/Example # 1 Proof Example # 2 Proof/Example # 3 Concluding sentence: The average school uniform costs three hundred and fifty dollars! An average student salary can’t afford uniforms Students
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Free Data Flow Diagrams Tutorial DFD Tutorial Data Flow Diagrams - Introduction Data flow diagrams can be used to provide a clear representation of any business function. The technique starts with an overall picture of the business and continues by analyzing each of the functional areas of interest. This analysis can be carried out to precisely the level of detail required. The technique exploits a method called top-down expansion to conduct the analysis in a targeted way. [pic] The
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polution other than the world trying to come up with other options for the use of fuel in cars and airplanes other than gas. If we used other options instead of just gas there would be alot less air pullution. Other pullution problems can be reduced by using
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Academic Criticism Graphic Organizer Academic Criticism: Literature Lady Macbeth’s Scene from Macbeth Academic Criticism: Art Provide the Title of Your Selection: Academic Criticism: Theater Michael Lynch’s Stage Adaptation Step 1: Observe Lady Macbeth was being haunted in her dreams because of the actions her and her husband had carried out. Characterizations was also revealed because it showed Lady Macbeth was not cold hearted and that she had a conscience. Lady Macbeth is wearing
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Macbeth Characterization Graphic Organizer Use this graphic organizer to collect your thoughts about characterization in Macbeth. As you read each scene‚ record what you learn about the character. Add the line from the play that supports your idea. Lady Macbeth: Observations Text Support Looks Ambitious and serious to do what it takes to get what she wants “not lose the dues of rejoicing‚ by being ignorant of what greatness is promised thee” Actions She convince Macbeth to kill King Duncan
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