Homework Unit2 Date: 22 July 2013 True/False Questions for Unit 2 Please Type the entire word in the blank‚ save‚ email. 1. TRUE A requirement is 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
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True/False Questions for Unit 2 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 stakeholder in the database discussion. False 3. Forms are used for gathering input. True 4. A transaction database is optimized to track transaction time. True 5. Data mining uses business intelligence tools and techniques on a variety of data sources brought together in a data warehouse
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Database Concepts‚ 4e (Kroenke) Chapter 1 Getting Started 1) The purpose of a database is to help people keep track of things. Answer: TRUE Diff: 1 Page Ref: 4 2) A possible problem with keeping data in lists is that if you delete a row of data from a list you may also delete some data items that you want to keep. Answer: TRUE Diff: 1 Page Ref: 4 3) An advantage of keeping data in lists is that if you update a data value in one row of data in a list‚ other occurrences
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Assignments Requirements 1. Look up the definition of functional dependency. Can you find a good example? In relational database theory‚ a functional dependency is a constraint between two sets of attributes in a relation from a database. Cars Suppose one is designing a system to track vehicles and the capacity of their engines. Each vehicle has a unique vehicle identification number (VIN). One would write VIN → Engine Capacity because it would be inappropriate for a vehicle’s engine to have
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Part 1. Answer each question "True" or "False". Briefly explain your answer. (Just a few words may be appropriate‚ and no more than a sentence or two is needed.) If the answer is "False" your explanation should state how the statement should be changed to make the answer "True". Make sure to include the entire question‚ with your answer in BOLD PRINT. __False_ 1.The U.S. Supreme Court decided that it violates the Constitution to deny same-sex couples the right to marry. The majority of State
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Question 2 (0.5/0.5) Exhibit 2–4 Production possibilities curve data | A | B | C | D | E | F | Capital goods | 150 | 140 | 120 | 90 | 50 | 0 | Consumer goods | 0 | 20 | 40 | 60 | 80 | 100 | | | | | | | | In Exhibit 2-4‚ the concept of increasing opportunity costs is represented by the fact that: a) Greater amounts of capital goods must be sacrificed to produce each additional unit of consumption goods. Question 4 (0.5/0.5) As shown in Exhibit 8-3‚ in order to maximise
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Silberschatz−Korth−Sudarshan • Database System Concepts‚ Fourth Edition Front Matter 1 1 11 11 35 35 36 87 140 140 141 194 229 260 307 307 308 337 363 393 393 394 446 494 529 563 563 564 590 637 Preface 1. Introduction Text I. Data Models Introduction 2. Entity−Relationship Model 3. Relational Model II. Relational Databases Introduction 4. SQL 5. Other Relational Languages 6. Integrity and Security 7. Relational−Database Design III. Object−Based Databases and XML Introduction 8. Object−Oriented
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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 course project is based on the Westlake Research Hospital scenario that you have been studying throughout the course and uses the Westlake database you used for the Group A labs. To complete the project‚ you will need to use your copy of the SQL2008ExpVM
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Rachana B Avadhani VIII A Data Base Concepts A database management system (DBMS) is the software that allows a computer to perform database functions of storing‚ retrieving‚ adding‚ deleting and modifying data. Relational database management systems (RDBMS) implement the relational model of tables and relationships. Database Data: is the required particular piece of information which we need. The information in the database is stored in records. Records: The records are information
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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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