Jeremy Wallace CIST1220 September 12, 2014 Chapter 10 Key Terms Data Structure – A model of a database. Entity – An object Attribute – An item of information Entity-Relationship (ER) Modeling – Used to model a database system after a real-world system Instance – An occurrence of an entity Linking Table - database table that contains common fields from two or more other database tables within the same database Connecting Table – See Linking Table. Associate Table – See Linking Table.
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3.1 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. 3.2 List the various cases where use of a null value would be appropriate
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Home Health Patient Tracking Sheet Gregg Moore Western Governors University Home Health Patient Tracking Sheet Field Name | Field Type(OASIS-C Data, n.d.) | Field Size(OASIS-C Data, n.d.) | Definition(OASIS-C Data, n.d.) | Allowable Values/ Edits(OASIS-C Data, n.d.) | CMS Certification # | Number | 6 | Specifies the agency’s Centers for Medicare and Medicaid Services (CMS) certification number (CCN/Medicare provider number). | | If the HHA has a CMS Certification number, it must be
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University of La Verne Winter 2013 BUS 510: Management of Information Technology Group Project F&F Virtual Fitting Room of Tesco Instructor: Dr. Nazila Safavi Group members: ming-wei li Shunzi Jin Tzu-hao Huang Xia Fang Yan Lu Jan. 30, 2013 Table of Content Abstract 3 Introduction
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indication of financial pressure that would contribute to employee fraud? a. a big change for the better in an employee's lifestyle b. an employee suddenly acquires lots of credit cards c. inadequate internal controls d. too close association with suppliers or customers 2. Research has shown that _______ accounts for the highest number of occupational frauds while ________ accounts for the highest median loss. a. corruption / financial statement fraud b. financial statement
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Principles of Database Management Systems Homework 1 Ying Li 4861521 Homework 1 Exercise 1.4 Explain the difference between external, internal, and conceptual schemas. How are these different schema layers related to the concepts of logical and physical data independence? Answer: External schemas, which usually are also in terms of the data model of the DBMS, allow data access to be customized (and authorized) at the level of individual users or groups of users. Internal
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information regarding all of the parts and services that Huffman Trucking specializes in has to be done right or else the whole data base will be wrong. The ERD is basically an abstract and conceptual representation of data. This form of database modeling method, it is used to produce a sort of conceptual or you can say semantic data model. The beauty of the ERD is that it is very capable of showing the process of the data being transferred and used, by just using shapes and lines to represent the
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CS 2203 Unit 1 – 8 Self Quiz Review Questions The main purpose of the information model is to inform software developers and provide protocol-specific constructs. Select one: True False Question 2 Which term describes each two-dimensional table or file in the relational model? Select one: a. Database b. Relational Database c. Data Warehouse d. None of the Above Question 3 If a relation has more than one candidate key the one chosen to represent the relation is called the:
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Assignment 3: Business Intelligence and Data Warehouses Kevin Sloley Professor Dammlash Gebre CIS-111 Intro to Related Database Management Systems Due March, 2016 Outline the main differences between the structure of a relational database optimized for online transactions versus a data warehouse optimized for processing and summarizing large amounts of data. The primary difference between your application database and a data warehouse is that while the former is designed (and optimized)
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Database Management System Basith Shaik Southern New Hampshire University September 7, 2015 Abstract The intent of this paper is to design and propose a database management system solution to Grandfield College for tracking software installed. I have analyzed the organizational issues and needs and developed conceptual, logical, and physical designs of DBMS solution. In order to implement the solution, substantial research had been done on best practices in design, available products, and
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