Databases | Database Construction and Management 1. What is a database? A database is one or more large structured sets of persistent data‚ usually associated with software (database management system) to update and query the data. A simple database might be a single file containing many records‚ each of which contains the same set of fields where each field is a certain fixed width - From FOLDOC A database is a collection of data elements (facts) stored in a computer in a systematic way
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used (shared) by application systems of an enterprise Examples of Databases • Medical records • Bank accounts • Stock control • Telephone directories • Stock market prices Universe of Discourse A database is a model of some aspect of the reality of an organisation. It is conventional to call this reality a universe of discourse (UOD)‚ or sometimes a domain of discourse. Database Users End user – Naïve or casual user – Accesses database
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Creating‚ Editing‚ and Managing Report Models for Reporting Services SQL Server Technical Article Published: January 2006 Applies To: Microsoft® SQL Server™ 2005 Reporting Services Summary: This paper provides information about managing and editing report models with Microsoft SQL Server Reporting Services. Introduction Microsoft® SQL Server™ Reporting Services (SSRS)‚ a component of Microsoft SQL Server‚ is a comprehensive‚ server-based platform that
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Bibliography 15 Appendix B – PYT Business Requirement for New Payroll System 16 Appendix C - Groupware Tools 20 Figures Figure 1: As-is Broadway Cafe Rich Picture 2 Figure 2: Broadway Cafe Alters Diagram 3 Figure 3: The Broadway Café Five Forces model 4 Figure 4: Customer Ordering Process 6 Figure 5. As-Is payroll system 14 Figure 6. Flow chart payroll system 17 Figure 7: Team ISO Groupware Home Page 20 Tables Table 1: YouTube Pros and Cons 7 Table 2. Comparison of Spreadsheet and Databases 11
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basic structure of a relational database with an example. 3. What do you mean by weak entity set? 4. Give example for one to one and one to many relationships. 5. What is the need of normalization? 6. Write a note on functional dependencies. 7. Who is a DBA? What are the responsibilities of a DBA? 8. What is a data model? List the types of data models used. 9. What are the components of storage manager? 10. What is a data dictionary? 11. What is an entity relationship model? 12. Define single valued
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INTRODUCTION Introduction The system deals with Automation of all the data of CONSTITUENCIES of Election Department and its details. It allows the political parties and individual leaders to manage information of the constituency and maintain the relationship with voter. It allows the user to view their status online. The Election Department can get the details of the candidate and voter as well. Without the wastage of time the election department can get the list of voters of any constituency
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corresponds to a row in the physical table of a relational database. ANS: F PTS: 1 REF: 3 7. A record in the logical design of a database corresponds to a row in the physical table of a relational database. ANS: T PTS: 1 REF: 3 8. The Systems Development Life Cycle is a series of steps that can be used to guide the development process for a database management system. ANS: T PTS: 1 REF: 4 9. An entity is represented by a column in the Entity-Relationship Model. ANS: F PTS: 1 REF: 5 10. Only one
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_________ relational type is the “relational ideal.” | 1:1 | M:1 | 1:M | M:N | Any attribute that is part of a key is known as a __________. | Key attribute | Key determiner | Logical attribute | Selector | The attribute B is _________ the attribute A if each value in column A determines one and only one value in column B. | Logically dependent on | Determined by | Owned by | Functionally dependent on | All primary key entries are unique‚ and no part of a primary key may be __________
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Kheng Horng Gan Edwin IS-240.009‚ Disc6 2/23/14 Questions 2 – Evaluate the advantages of the relational database model A relational database model has many advantages such as increase flexibility‚ increase information security‚ increase scalability and performance‚ increase information integrity (quality)‚ and reduce information redundancy. Firstly‚ most of the companies use database because it can handle changes easily and quickly. There are two views used to understand the flexible database
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Chapter 5 Normalization of Database Tables Discussion Focus Why are some table structures considered to be bad and others good and how do you recognize the difference between good and bad structures? From an information management point of view‚ possibly the most vexing and destructive problems are created through uncontrolled data redundancies. Such redundancies produce update and delete anomalies that create data integrity problems. The loss of data integrity can destroy the usefulness
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