Topics Chapter 9 Using Data Flow Diagrams Data flow diagram symbols Data flow diagram levels Creating data flow diagrams Physical and logical data flow diagrams Partitioning Event driven modeling Use case and data flow diagrams Systems Analysis and Design Kendall and Kendall Fifth Edition Kendall & Kendall Using Data Flow Diagrams Unexploded data flow diagrams are useful to identify information requirements Exploded data flow diagrams can be used for presentation‚ education
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Gas Station Project * Main * My Books * C/C++ Programs * Java Programs * Perl/PHP/Ruby Programs * Team Projects * Various Projects Program Description This was a semester-long project from my software engineering class at UNO. The goal of this project was to create a gas station management software package using the classic waterfall development lifecycle. Some of the requirements that needed to be met were: the ability to control gas pumps‚ keep track of in-store
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This assignment consists of two (2) sections: an infrastructure document and a revised Gantt chart or project plan. You must submit both sections as separate files for the completion of this assignment. Label each file name according to the section of the assignment it is written for. . The infrastructure which encompasses the network solution and security considerations is a major consideration for your company. Considering that the company will be expanding from one (1) floor to three (3) floors
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Contents ERD (Entity Relation Diagram) 2 2.1 History of ERD 2 2.2 Building Blocks 2 2.2.2 Relationship 2 2.3. Diagramming Conventions 3 MS ACESS TABLE 5 3.1 Parts of Table 6 3.2 Creating Tables in Access 6 Chapter No 2 ERD (Entity Relation Diagram) 2.1 History of ERD An entity-relationship model (ERM) is an abstract and conceptual representation of data. Entity-relationship modeling is a database modeling method‚ used to produce a type of conceptual schema or semantic data
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Entity Relationship Diagram The bellow diagram is what is refered to as an "Entity Relationship Diagram". Its purpose is to show the relationship between different data in the hotel management program ‚ and the actions that are performed on it. And how data from different objects relate to each other. Legend The Data Entities represent data that will need to be stored on the system‚ in general terms. The Relationships represent actions that will occur to the Data Entities‚ or Weak Entities.
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Frank and Alex in a tug-of-war • Draw the free body diagram on the back of your sheet or your notes for Frank winning (accelerating away) a tugof-war with Alex – Draw Frank and Alex as separate objects‚ with forces acting on each – How many forces are there on each? – Identify Newton’s 3rd law pairs – Identify Newton’s 2nd law relationships 1 Frank and Alex in a tug-of-war • Draw the free body diagram on the back of your sheet or your notes for Frank winning (accelerating away)
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TERNARY PHASE DIAGRAMS An Introduction Guna Selvaduray San Jose State University Credit for Phase Diagram Drawings: Richard Brindos Credit for scanning the phase diagrams: Brenden Croom G. Selvaduray - SJSU - Oct 2004 Utility of Ternary Phase Diagrams Glass compositions Refractories Aluminum alloys Stainless steels Solder metallurgy Several other applications G. Selvaduray - SJSU - Oct 2004 References on Ternary Phase Diagrams A. Prince‚ Alloy Phase Equilibria‚ Elsevier Publishing
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Food Web Diagram Snake (D) Hawk (D) Coyote (D) Insects (C) Scorpion (C) Lizard (C) Quail (C) Mouse (C) Cactus (P) Grass (P) When you are explaining an ecosystem you have producers‚ consumers‚ and decomposers. Producers are the plants and the tress in the ecosystem that provide the energy to the ecosystem. As for the desert the producers are cactus and grass. The consumers of the ecosystem are in three different kinds‚ they are herbivores‚ carnivores‚ and omnivores. Herbivores are the consumers
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6 Pg 305 2. What is a data flow diagram? Why do systems analysts use data flow diagrams? Answers: A picture of the movement of data between external entities and the processes and data stores within a system. Systems analysts use DFDs to help in the analysis phase by accomplishing the following three things: 1. Requirements Determination 2. Requirements Structuring 3. Alternative Generation and Selection 3. Explain the rules for drawing good data flow diagrams. Answers: Process: A. No process
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POST GRADUATE CENTRE MSc. COMPUTER NETWORKING Network Administration Title: Network Management/Maintenance Models Lecturer: Mr. Sharif Salem Lecturer: Mr. Shahir Title: Network Management/Maintenance Models Lecturer: Mr. Sharif Salem Lecturer: Mr. Shahir Names : Usama Musa Hamdan Student ID# : 110030807 Semester : 2 Academic Honesty Policy Statement I‚ hereby attest that contents of this attachment are my own work
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