IS3280 Data Management Assignment 3 Data Modeling and ER Diagrams Review ER notation sets at http://adbc.kennesaw.edu Database Design ER Notations Use how_to_draw_er_in_ppt.pptx or Gliffy to draw the models. If you use Gliffy save your drawing as an image [jpg file] and insert it into a Word document (in fact just adding your images to this document would be a good idea). Submit your word document if you used Gliffy or your powerpoint document via the D2L DropBox. 1. (2 pts) Examine the
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Chapter (11) Synchronous Motors Introduction It may be recalled that a d.c. generator can be run as a d.c. motor. In like manner‚ an alternator may operate as a motor by connecting its armature winding to a 3-phase supply. It is then called a synchronous motor. As the name implies‚ a synchronous motor runs at synchronous speed (Ns = 120f/P) i.e.‚ in synchronism with the revolving field produced by the 3-phase supply. The speed of rotation is‚ therefore‚ tied to the frequency of the source. Since
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however‚ plant and animal cells do have their differences. A plant cell is actually a large microscopic ’fully functioning ’ city‚ literally and figuratively‚ housing miniature structures known as organelles. It is fun to teach about a plant cell diagram
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Data Modeling Introduction Entity Relationship Modeling (ERM) a technique used to analyze & model the data in organizations using an Entity Relationship (E-R) diagram. Database Management System 1 Isaac M Morallo – MAITE LPU - Laguna Definitions Entity an aggregation of a number of data elements each data element is an attribute of the entity Background Introduced by Peter Chen in ‘75 now widely used You’ll find them in: Structured Systems Analysis and Design Methodology (SSADM)
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Question 1 (20 marks) Note: For multiple-choice questions‚ select the best answer. Incorrect answers will be marked as zero. No marks will be awarded for any explanations you may offer. Multiple choice (2 marks each) a. Under what condition would you be more likely to recommend a prototyping approach to systems development as opposed to a waterfall approach? 1. For a large system with multiple integration points to other organizational systems 2. For a system that is intended to solve a problem
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steps involved in the design of relational database are 1) Developing the conceptual model – Drawing the ER/ EER diagram 2) Transforming the Conceptual model into a set of relations – relational schema and 3) Normalizing the relations. Once ER / EER model has been developed for the application ‚ ER/ EER diagram can be mapped into a relational model . ER/ EER diagram consists of the following components. 1) Entities (Strong ‚ Weak) with attributes 2) Attributes may be
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91.3902 Database Systems Assignment #1 1. Discuss the role of a high-level data model in the database design process. High-level data models assist in conceptual design and helps express data requirements of the users and includes detailed descriptions of the entity types‚ relationships‚ and constraints. The high-level data model is also used as a reference to ensure that all users’ data requirements are met and that the requirements do not include conflicts. 2. List the various
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MGEB06 – LEC 01 & LEC 02 Macroeconomic Theory and Policy: A Mathematical Approach Assignment 1 Due: On or before Friday‚ October 4‚ 11:30am Rooms: LEC01 IC 284 (Professor Parkinson’s office) LEC02 IC 286 (Professor Au’s office) (Note: Assignments submitted after Friday‚ October 4‚ 11:30am WILL NOT BE accepted under ANY circumstance.) Instructions: You can submit an individual or group assignment. If you submit a group assignment‚ there must be no more than FIVE students
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1.a) DATA FLOW DIAGRAM Data flow diagrams illustrate how data is processed by a system in terms of inputs and outputs.Data flow diagram are used widely for modeling the requirements.the DFD is also known as a data flow graph or a bubble chart. Data Flow Diagram Notation We can use two different types of notations on our data flow diagrams: Yourdon & Coad or Gane & Sarson. Process Notations 1) Process A process transforms
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Far Eastern University Diliman SYSTEM ANALYSIS AND DESIGN Parking Lot System In Partial Fulfillment of the Requirements for the Degree of Bachelor of Science in Information Technology by: Jonathan D. Granada Jonathan G. Manalili Aaron Paul V. De Lara Mr. Alvin Aniag Adviser April 8‚ 2013 ACKNOWLEDGEMENT This project would not have been possible without the support of many people. First‚ we would like to express our gratitude to our adviser‚ Mr. Alvin Aniag who was abundantly
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