Normalization Normalization is a method for organizing data elements in a database into tables. Normalization Avoids • Duplication of Data – The same data is listed in multiple lines of the database • Insert Anomaly – A record about an entity cannot be inserted into the table without first inserting information about another entity – Cannot enter a customer without a sales order • Delete Anomaly – A record cannot be deleted without deleting a record about a related entity.
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College of Business Hospitality & Tourism Studies Department of Computer Science & Information System CIN623 Database Design & Programming Final Examination Trimester 1 – 2011 Date: Duration:3 hours plus 10 minutes INSTRUCTION TO STUDENTS 1. You are allowed ten minutes extra reading time during which you are not to write 2. Write all answers to each question in the Answer Booklet. 3. Write your Student ID number at the top of each attached sheet. 4. Insert all written foolscaps in their correct sequence
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School Administrators and Teacher Stress Introduction Education and the roles of principals and teachers have shifted in recent years (Blasé and Blasé‚ 1999). There has been a move from the traditional bureaucratic model of control toward shared decision making in schools; nonetheless‚ some schools choose to embrace the view of leadership that presents an obvious divide between the two (Maxfield and Flumerfelt‚ 2009). Teachers are expected to fill many roles in their daily tasks. Harrison
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of the database applications. 2. What is the role of the database in the IS generic architecture? 3. What is file-based system? Give 2 examples of FBS. 4. What are main limitations of FBS? 5. What is database? 6. What does it mean that database is self-describing collection of interrelated records? 7. What does it mean that data is integrated? 8. What does it mean that database is collection of logically related data? 9. What is DBMS? 10. What are the main categories of database languages
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NORMALIZATION OF DATABASE NORMALIZATION- is the process for evaluating and correcting table structures to minimize data redundancies‚ thereby‚ reducing the livelihood of data anomalies. The normalization process involves assigning attributes to tables based on the concept of determination. Normalization works through a series of stages called normal forms. 3 Stages of Normalization 1. 1NF or FIRST NORMALIZATION FORM 2. 2NF or SECOND NORMALIZATION FORM 3. 3NF or THIRED NORMALIZATION
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Although‚ data is separated into different and more complex tables during normalization‚ the process of normalizing a database can help to organize data more efficiently by minimizing redundancy and providing more accurate records. During the process‚ column and field names are consolidated into more specific ones to avoid repetition of data. In many cases‚ tables are divided into two or more tables and linked via a relationship using their Primary Keys and/or Foreign Keys. The main goal is to
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to the U.S. Bureau of Labor Statistics‚ the median annual wages of network and computer systems administrators working in the United States were $66‚310 in May 2008. The middle fifty percent of network and computer system administrators earned‚ on average‚ between $51‚690 to just around $84‚110 annually. The lowest 10 % earned less than $41‚000 while the top 10 percent earned more than $104‚070. CAREER OBJECTIVES A data processing coordinator is part of an organization’s information technology
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PubMed and Google Scholar are two different databases used for searching articles on online. PubMed are mostly used for biomedical and clinical journals. The data information are organized based on the date‚ author‚ tittle and type of article. This made it easier to search and retrieve journal articles faster. PubMed have an advance function like MeSH term subheading but Google scholar lack MeSH function (Jean-François‚ Laetitia‚ & Stefan‚ 2013). Also‚ the content of the articles on PubMed are
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approximately 928‚000 education administrators in the U.S. at all levels of public and private institutions. About 66% of all educational administrators were women in 2015 (DPE‚ 2017). Additionally‚ there were approximately 20 million students attending U.S. college and universities in 2015 (Fast Facts‚ 2017). As more people pursue higher education‚ administrators‚ faculty‚ and other staff will be necessary to serve the needs of students. Some of the areas that these administrators are responsible for include
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I interviewed an individual who has a variety of experience as an administrator. This individual has worked with both high school and middle school students as either a Principal‚ Assistant Principal or Athletic Director. He has also provided support to elementary staff and students when needed. Some key points that I achieved from the interview is that regardless of how organized and precise your schedule seems to be‚ you must have flexibility within your schedule. Along with flexibility‚ also
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