Files and Relational Databases What is a file? • contains groups of records used to provide information for operations‚ planning‚ management and decision making. • can be used for storing data for an indefinite period of time‚ or they can be used to store data temporarily for a specific purpose. FILE TYPES • Master Files -- contain records for a group of entities. The attributes may be updated often‚ but the records themselves are relatively permanent. These files
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Lesson 1 What is a database: A database is a group of data that has been organised in a table or group. This makes it easy to find data‚ but also allows you to not have any duplicates in a group. A database is used in a school or college to store students date of births. This allows the school to be able to see how old the students are. The database can also be password protected to keep the data safe. What is a flat file database: A flat database is where you have all your data in one table.
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Questions Indicate whether the following statements are true or false on the student answer sheet. 1) A requirement is something a database needs to do in order to fulfill its purpose. True 2) You only need to include the most important stakeholders in the database discussions. False 3) Forms are used for gathering input. True 4) A transaction database is optimized to track transactions in real time. True 5) Data mining uses business intelligence tools and techniques on
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Comparing and Contrasting the Relational Database Model and OO Model The relational database model is based upon tables or relations. In this model‚ the physical implementation of the database is abstracted away from the user. Users query the database using a high-level query language‚ such as SQL. The relations are made up of columns‚ which have headings indicating the attribute represented by that column. Tables have key fields‚ which can be used to identify unique records. Keys relate tables
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1 Database Design and Implementation Candidate Name: Course Name: Date of Submission: Authorization: MAY MYAT SWE Database Design and Implementation 7‚ April 2012 University of Greenwich June 2012 KMD Yangon Center MAY MYAT SWE 2 Database Design and Implementation Table of Contents No Description Page Assumption ........................................................................................ 3 1. 2. 3. 4. 5. 6. Conceptual Data Model ........................
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August 4‚ 2009 What is Database Normalization? Database Normalization is a systematic way of ensuring that a database structure is suitable for general – purpose quering and normalization is the process of efficently organizing data in a database. This process was first introduced in 1970 by E.F. Codd and has since been redefined to higher normal forms. The two goals of the normalization process are: eliminating redundant data and ensuring that data dependencies make sense. These goals reduce
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something a database needs to do in order to fulfill its purpose. 2. FALSE You only need to include the most important stakeholders in the database discussions. 3. TRUE Forms are used for gathering input. 4. TRUE A transaction database is optimized to track transactions in real time. 5. TRUE Data mining uses business intelligence tools and techniques on a variety of data sources brought together in a data warehouses. 6. TRUE The domain is the focus or knowledge area of a database.
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Case Study On Harrah’s Big Database Gamble Submitted By: Pratik Mohire HARRAH’S BIG DATABASE GAMBLE BRIEF ABOUT THE CASE Harrah’s is the world largest provider of branded casino entertainment; it has around 25 million customers (2001) 25 casino with 40‚000 gambling machines in 12 states. For years it had been a fairly small gambling company but‚ by 2001‚ had emerged as the second largest in the industry. By the mid-1990s‚ the gambling Business was flourishing
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__________________________________________________________________________________ DATABASE DESIGN I. Introduction Database Application What is an Employment Agency System? An employment agency is an organization which matches employers to employees. In all developed countries there is a publicly funded employment agency and multiple private businesses which also act as employment agencies. Business Rules Business Rules One or more Agencies fall into one or more Reference Agency
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DATABASE DEVELOPMENT FOR AH CHAI MINI CINEMA INTRODUCTION Ah Chai Mini Cinema is a mini cinema. Even though it just a small cinema‚ but it gives the best service and provide quality movie at the good rate. From our observations‚ the cinema has been using conventional filling system to store information about their customers‚ movies and tickets. It requires a lot of files to keep the data. When there are a lot of file‚ it is difficult for the librarians to search for the data when needed
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