Exercise 1 1. Draw an E-R diagram for each of the following situations (if you believe that you need to make additional assumptions‚ clearly state them for each situation): a. A hospital has a large number of registered physicians. Attributes of PHYSICIAN include Physician_ID (the identifier) and Specialty. Patients are admitted to the hospital by physicians. Attributes of PATIENT include Patient__ID (the identifier) and Patient_Name. Any patient who is admitted must have exactly one admitting
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BAR DIAGRAMS Bar diagrams are one of easiest and the most commonly used devices of presenting most of the business and economic data. These are satisfactory for categorical data or series. They consist a group of equidistant rectangles‚ one of each group or category of the data in which the values or the magnitudes are represented by the length or height of the rectangles‚ the width of the rectangles being arbitrary and immaterial. These diagrams are called one-dimensional because in such diagrams
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IN A RESTAURANT WAITER: CAMARERO CLIENT: CLIENTE W: GOOD MORNING‚ CAN I HELP YOU? C: YES PLEASE‚ I’D LIKE A TABLE FOR ONE W: FOLLOW ME‚ PLEASE. HERE IS THE MENU C: THANK YOU. I’D LIKE FOR STARTER A BIG SALAD W: WHAT WOULD YOU LIKE FOR MAIN COURSE? C: I’D LIKE FISH & POTATOES‚ AND FOR DESSERT A BIG APPLE CAKE W: WHAT WOULD YOU LIKE TO DRINK? C: I’D LIKE A WHITE WINE W: OK.‚ THEN‚ A BIG SALAD‚ FISH & POTATOES‚ A BIG APPLE CAKE AND A GLASS/ A BOTTLE OF WHITE WINER ************ C: CAN I HAVE THE BILL
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THE PLOT DIAGRAM The plot diagram: most people learn about it somewhere in elementary school‚ and indeed‚ it is the most elementary of tools a writer and reader can use in summarizing and outlining a story. It is so basic and flexible that pretty much every story written in existence can be outlined via the plot diagram. And yet‚ there are stories that‚ when outlined‚ twist the plot diagram into interesting shapes‚ which leads me to suspect that there is a missing step in the plot diagram: the elusive
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the offices‚ all the computers should be able to view and update the data from any of the three offices. In other words‚ the data storage server within each LAN should be accessible to all computers‚ no matter where they are located. Draw a network diagram that will support this configuration. 3. A small start-up company has a Web-based customer sales system that is written by using PHP and JavaScript. The company is deciding whether to host the system on its own servers‚ contract with a hosting
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Collaborative Writing Space for Project I THE OUTPUT PROCESS 1. The outputs of the order process are reports of credit holds‚ customer invoice when product is delivered and paid for‚ processing the product order‚ inventory check (product availability)‚ shipping instructions‚ and reports of back orders. The Diagram: The diagram starts off with one of the business processes called sales. A customer faxes‚ mails or calls in an order to the company. The order is taken down by a representative
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1 引言 Detailed Design Specifications for Restaurant Automation Project designed by LG13504001Anastasiya Afanasenka PL10215001 Edgar Agostinho PL10215002 Edna Muianga PL10215003 Firdaus Samijadi Department of computer Science andTechnology University of Science and Technology of china Hefei May 2nd 2013 Index 1 Introduction.......................................................................................................................................2 1.1 编写目的 1.1 Preparation
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shown. force Y force X 0 0 0 time 0 time What are forces X and Y ? force X A air resistance resultant force B air resistance weight C upthrust resultant force D upthrust weight The diagram shows four forces applied to a circular object. 30 N 20 N 20 N 30 N Which of the following describes the resultant force and resultant torque on the object? resultant force resultant torque A zero zero B zero non-zero
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Logic to Ladder Diagram There are some methods to do PLC programming. The programming methods can be with Logic Ladder Diagram‚ mnemonic (statement list)‚ and / or function block diagram. One of the PLC programming methods that are very commonly used programming using PLC ladder diagram. The method is practical and easy to understand. The programmer in charge of writing a program should describe an electronic switch circuit. It can be designed to perform the conversion of electronic circuits that
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Using Data Flow Diagrams Data flow diagram is used by system analyst to put together a graphical representation of data processes throughout the organization. It depicts the broadest possible overview of system inputs‚ processes‚ and outputs. A series of layered data flow diagrams may be used to represent and analyze detailed procedures in the larger system. By using combinations of only four symbols‚ the system analyst can create a pictorial depiction of processes that will eventually provide
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