Normalization of Database Tables Database Tables and Normalization * Normalization is a process for assigning attributes to entities. It reduces data redundancies and helps eliminate the data anomalies. * Normalization works through a series of stages called normal forms: * First normal form (1NF) * Second normal form (2NF) * Third normal form (3NF) * Fourth normal form (4NF) * The highest level of normalization is not always desirable. * The Need
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Determining databases and Data Communications Bis/320 September 23‚ 2013 Dr. Julie Ruse Determining databases and Data Communications Electronic Company To determine ways of managing a trade show booth the individual shall keep certain things in mind about the components‚ equipment‚ shippers‚ shipment‚ and time to assemble the pertinent equipment for display. Not only setting up the pertinent equipment for display but also need to make selection on setup team‚ and supervised the trade
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Using a database management system (DBMS) is a wise decision for any business that plans to implement the use of a database as part of their IT infrastructure. A database management system‚ also referred to as a database manager (Rouse‚ 2005)‚ allows one or many computers to create‚ query‚ and manipulate data in the database (Rouse‚ 2005). The database management system also manages request from users and applications‚ making the database much more user friendly‚ since the users nor the applications
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Introduction Huffman Trucking is in need of a system to help maintain its large trucking fleet’s maintenance‚ purchases‚ and vehicles. What is being purposed is a relational database that will greatly improve the record keeping for its fleet. This system will allow for reports to be generated to ensure that all vehicles have been properly maintained and record the daily operations of the maintenance department. The types of reports that can be generated are: * Parts Inventory Purchase
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activities. The ultimate goal of the database is to improve patient safety and quality of care (npdb.com). The creation of database compels malpractice insurers‚ licensing agencies‚ HMOs‚ hospitals and group practices to report malpractice payments and any adverse action affecting medical professionals. The database is achieving its purpose as the 2011 annual report showed that medical malpractice payments declining steadily from 2002 to 2011. The database also makes it easier for authorized agencies
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The Fundamentals of Database Design To end up with a good ‘relational database’ application‚ you need to ask: Do I actually need one? If so‚ how far do you want to take it? By this I mean‚ is this to be a simple database to store information about only one‚ or very few‚ related entities (i.e. a list of people who attended a certain event‚ and how they came to hear about the event) which are not likely to change; or a permanent and well used application with several different entities (i.e.
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A definition of a Network database model Network database model is a hierarchical structure created to represent complex relation-ships more effectively than the hierarchical model‚ to improve database performance standard. Network database generally implement the set relationships by means of pointers that directly address the location of a record on the disk. This gives excellent retrieval performance Advantages of the network database model * Capability to handle more relationship types:
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Overview of Database Concepts TRUE/FALSE 1. A database is a physical storage device for data. ANS: F PTS: 1 REF: 2 2. A field is a basic unit of data also referred to as a record. ANS: F PTS: 1 REF: 3 3. A character is a basic unit of data and can consist of a number‚ letter‚ or special symbol. ANS: T PTS: 1 REF: 3 4. A collection of fields is a file. ANS: F PTS: 1 REF: 3 5. A collection of records is a file. ANS: T PTS: 1 REF: 3 6. A field in the logical design of a database corresponds
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VALLIAMMAI ENGINEERING COLLEGE III SEMESTER - B.E – COMPUTER SCIENCE AND ENGINEERING QUESTION BANK - CS6302 DATABASE MANAGEMENT SYSTEMS UNIT I 1. What are the disadvantages of file processing system? 2. Explain the basic structure of a relational database with an example. 3. What do you mean by weak entity set? 4. Give example for one to one and one to many relationships. 5. What is the need of normalization? 6. Write a note on functional dependencies. 7. Who is a DBA? What are the responsibilities
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EXPERIMENT NO 2 FACT TABLE FOR UNIVERSITY DATABASE AIM:-Creation of dimension table and fact table for University Database. THEORY:- DIMENSION TABLE In data warehousing‚ a dimension table is one of the set of companion tables to a fact table. The fact table contains business facts or measures and foreign keys which refer to candidate keys (normally primary keys) in the dimension tables. Contrary to fact tables‚ the dimension tables contain descriptive attributes (or fields) which are typically
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