Answers to review questions: 1. Define each of the following terms: a. Data: Raw information that has not been processed b. Field: A place where data is entered. c. Record: A collection of the related information. d. File: A collection of the related records. 2. What is data redundancy‚ and which characteristics of the file system can lead to it? Data redundancy in a database occurs when same data is stored in different tables unnecessarily. A modification to a single piece of data requires change
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Mekao Tramil November 11‚ 2014 PT2520 Unit 9 Labs Lab 9.1 1. Both SQL server and windows authentication mode is enabled. Lab 9.2 13. What is a natural key? What are the advantages and disadvantages of using natural keys? 14. What are access and security requirements? 15. What is one to one relationship? 16. What are many to many relationships? 17. What are linking entities? 18. What are domain entities? 19. What are weak entities? 20. What is normalization? 21. What is first
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Lab 10 Course Project Purpose In this final lab‚ you will apply the knowledge acquired from Units 4-9 of this course to completing a project‚ which will require the following skills: Creating tables Creating a composite key Adding columns to an existing table Creating a stored procedure to guard against a SQL injection attack Granting permissions Applying the concept of clustered indexes Creating a non-clustered index Creating a trigger Executing queries to meet requirements Project Scenario The
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the link between your professional judgement and the concepts that it is built upon • To help develop your academic judgement and show the extent to which it is linked to professional judgement Assessment activity Length required Weighting within unit The assignment requires the student to identify their personal views‚ and in exploring the relative merits of ‘opt-in’ and ‘opt-out’ approaches to organ donation‚ demonstrate their personal and academic learning 2500 words 50% Practice Outcomes
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Unit 2 Homework Questions Alvaro Ojeda PT 2520 Instructor Mrs. Hubbard 1. What is a database requirement? * The requirements for a logical and physical database vary by size and design parameters. A logical database must be able to access and identify all files within the storage system to operate correctly‚ whereas a physical database manages a much smaller field of information. Sometimes‚ a physical database stores only a single file with one value or word in it. 2. What
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In this presentation‚ the author has explained different metrics and there attributed used to measure software. A person can only measure and represent it in number when he knows something about it. On the other hand‚ if has no idea about it then he doesn’t have any idea about it [1]. There are two types of software complexity metrics. One gives the efficiency of the machine while running the software which is called as computational complexity. Another one is giving us the factors which affect the
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PT2520 Unit 1: Database Concepts Who Needs a Database? Copyright © 2012 Pearson Education‚ Inc. Publishing as Prentice Hall Chapter 1.1 Database Overview • A database is a set of related data. • An old-style library catalog‚ a Rolodex or an address book are all databases. • Usually we use the term “database” to refer to electronic databases. Copyright © 2012 Pearson Education‚ Inc. Publishing as Prentice Hall Chapter 1.2 Flat File Databases • The simplest electronic database structures are
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PT2520 02/21/2013 Unit 8 Research Assignment MySQL Authentication and Authorization Management When a client connects to the MySQL server‚ the server uses the username provided by the client and the client host to select the appropriate account row from the mysql.user table. It then uses this row to authenticate the client. Before MySQL 5.5.7‚ the server authenticates the password provided by the client against the Password column of the account row. As of MySQL 5.5.7‚ the server
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Assignment Instructions Unit: 9 Instructions: This week’s assignment consists of watching a scenario about Sandwich Blitz‚ Inc. and answering questions regarding the use of new technology as a means of improving communication between employees and customers. Sandwich Blitz‚ Inc. has a great problem...an increase in the number of customers! Employees have been consistently reporting that they are overwhelmed by the volume of customers and management has noticed that the number of reported
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Unit 9 Assignment 1 Internet Technologies Review NT 1210 Multiple: 1. B 2. B D 3. A D 4. B 5. B C 6. A 7. D 8. D 9. C 10. A B 11. B 12. A 13. A 14. C 15. C 16. A‚ B‚ C 17. A D 18. B D 19. A 20. B Unit 9 Assignment 1 Internet Technologies Review NT 1210 Key Terms: • The Internet-the global network formed by interconnection most of the network on the planet with each home and company network connecting to an internet service provider which in turn
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