Difference Between ERD and DFD ERD and DFD are data presentation models that help in identifying the flow of data as well as inputs and outputs. They are important as they enable effective communication between members of different departments in an organization. There are similarities in the two types of data presentation models although there are differences that will be talked about in this article. DFD’s are systematic representation of how data flows in an organization‚ how and from where
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ERD Explanation DBM/380 January 23‚ 2012 ERD Explanation There are several levels of normalization such as 1NF‚ 2NF‚ and 3NF. The Huffman Driver database was brought to the normalization level of 3NF by following a series of guidelines from the lowest form of normalization‚ 1NF. The first normalization form level (1NF) consists of the basic rules for an organized database. These are: • Eliminate duplicative columns from the same table. • Create separate tables for each group
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Question 1 Given the following business rules‚ create the appropriate Crow’s Foot ERD. a. A company operates many departments. b. Each department employs one or more employees. c. Each of the employees may or may not have one or more dependents. d. Each employee may or may not have an employment history. Question 2 The Hudson Engineering Group (HEG) has contacted you to create a conceptual model whose application will meet the expected database requirements for the company’s
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Normalization of the ERD By: Vanessa Kennedy Normalization of the ERD The normalization of the ERD along with the driver’s log is taking all of the data within the database and putting the information into tables (World Book‚ 2011). In addition‚ after the data is normalized it then is put into an Entity Relationship Diagram or ERD (World Book‚ 2011). In this paper we will look at the ERD of the driver’s log. The normalization that I would perform on the driver’s log would be on the Driver’s
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businesses must give their ABN‚ and trustees must give the trust account number. List of assumptions 1.) I did not add a double line to the employee sub-types because I didn’t feel that three employee types would be sufficient. Most likely for this type of business there would be other employees like a secretary or IT staff. 2.) I placed a d in the circle for subtypes to indicate subtypes as discriminators. Every employee most likely has a specific position. 3.) I created an associated entity
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Laws Claire M. Germain Cornell Law School‚ cmg13@cornell.edu Recommended Citation Germain‚ Claire M.‚ "Digitizing the World ’s Laws" (2010). Cornell Law Faculty Working Papers. Paper 72. http://scholarship.law.cornell.edu/clsops_papers/72 This Article is brought to you for free and open access by the Faculty Scholarship at Scholarship@Cornell Law: A Digital Repository. It has been accepted for inclusion in Cornell Law Faculty Working Papers by an authorized administrator of Scholarship@Cornell
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Huffman Trucking ERD Explanation Alvin Calahan‚ Adam Morgan University of Phoenix Database Concepts DBM/380 Michael James November 19‚ 2011 Huffman Trucking ERD Explanation Huffman Trucking‚ founded in 1936 with a single tractor trailer has grown tremendously over the years. Huffman Trucking now has 800 road trailers‚ 2100 45 ft. trailers‚ 260 roll-on and roll-off units‚ 925 drivers‚ and 425 support personnel. With facilities in Cleveland‚ OH‚ Los Angeles‚ CA‚ St. Louis‚ MO‚ and Bayonne
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able to go to different section of the university; for such large universities‚ this view is known as the grid view. In our case‚ each user is able to see our website differently. For example‚ students will see a website strictly for students and professors will see one for them while the staff members will see an entirely different one. From the home page‚ each user will be navigated to a separate log in page. This page will either allow the user to
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Machine CBN – Central Bank of Nigeria CD – Compact Disk ECR – Electronic Cash Register GPRS – General Packet Radio Service PDA – Personal Digital Assistant POS – Point of Sale RAM – Random Access Memory SMS – Short Message Service ABSTRACT This project aims at deploying a Point of Sale terminal solution in the Municipal Council of Voi to manage their revenue collection process from the public. It will run for duration of 28 Weeks from September 2012 to March 2013 and will demonstrate the
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Draw ENTITY RELATIONSHIP DIAGRAM (ERD) for the following requirement: 1. Students take courses in a college 2. Customers have accounts in a bank 3. People own vehicles 4. Employees manage projects 5. Machines are made up of parts 6. A college offers several courses. Attributes of the course include course code‚ name and credits. Each course may have zero or more subjects 7. Hotel (HotelNo‚ Name‚ Add‚ TelNo) Room (RoomNo‚ HotelNo‚ Type‚ Price) Booking (HotelNo
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