SQL INTRODUCTION Diaz‚ Francis Lorenzo A. BSM CS 3B G2 History of SQL SQL began life as SEQUEL11‚ the Structured English Query Language‚ a component of an IBM research project called System/R. System/R was a prototype of the first relational database system; it was created at IBM’s San Jose laboratories by Donald D. Chamberlin and Raymond F. Boyce in 1974‚ and SEQUEL was the first query language to support multiple tables and multiple users. In the late 1970s‚ SQL made its first appearance in
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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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MANAGING STRATEGY QUESTION 1 The Porter’s generic strategies and the Strategy Clock have a common purpose; they both focus on how a firm can create competitive advantage over its competitors. The purpose of the models is to create a common understanding about position of the current strategies and options for the new strategies if need be. These strategies can be used by companies to analyse its competitive position in comparison to the offerings of competitors
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Database Development Process 1. Define business processes Many database development efforts begin by defining the key business and/or operational processes within the organization Developers first create high-level models showing the major activity steps associated with marketing‚ sales‚ production‚ human resource management‚ public relations‚ research and development‚ and so on Taken together‚ these process maps represent an enterprise-wide model of the organization and its core 2. Determine
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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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I. Column Oriented Database A column-oriented DBMS is a database management system (DBMS) that stores data tables as sections of columns of data rather than as rows of data. In comparison‚ most relational DBMSs store data in rows. This column-oriented DBMS has advantages for data warehouses‚ customer relationship management (CRM) systems‚ and library card catalogs‚ and other ad hoc inquiry systems where aggregates are computed over large numbers of similar data items. It is possible to achieve
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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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Consequences of Accidents at Workplace a) Financial Costs ●It also requires spending on repairing the damaged equipment and compensating the effected employee. The employer has to spend on training the new recruit. Some people may even have to work over time to make up for lost time and will require overtime payments. Preparing accident reports and starting the investigation process also adds additional expenses. All these things combine to cause heavy financial loss to the worker. b) Losses
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Managing Diversity No two humans are alike. People are different not only in gender‚ culture‚ race‚ social and psychological characteristics but also in their perspectives and prejudices. Society had discriminated on these aspects for centuries. Women and minority groups were denied of their due rights. But not any more. Since 1960s‚ when federal legislation prohibited employment discrimination‚ minorities and female applicants have become the fastest-growing segment in the work force. Diversity
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