DATABASE TECHNOLOGIES CLASS T.E. ( INFORMATION TECHNOLOGY) HOURS PER LECTURES : 04 WEEK TUTORIALS : -PRACTICALS : 02 HOURS EVALUATION THEORY 3 SYSTEM: PRACTICAL -ORAL -TERM WORK -- SEMESTER VI MARKS 100 -25 25 Objectives of the course: • This course aims to provide continuum to where the first course of databases left off. Design aspects of relational databases are covered. • Complex data models like OO OR parallel and distributed are introduced. • The course provides students a good overview
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customer and a second for subscription. Specify identifiers‚ attributes‚ relationships and cardinality 2. (2 pts) Draw the ERD for the following scenario. The only attribute you need to include is the IDENTIFIER. Be careful with your cardinality. A patient has one or more patient histories; each instance of patient history belongs to one patient. 3. (2 pts) Draw the ERD for the following scenario. Include all the attributes. Note that one of your tables will have a composite identifier. You
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A MULTIDIMENSIONAL DATA MODEL Data warehouses and OLAP tools are based on a multidimensional data model. This model views data in the form of a data cube. FROM TABLES TO DATA CUBES What is a data cube? A data cube allows data to be modeled and viewed in multiple dimensions. It is defined by dimensions and facts. In general terms‚ dimensions are the perspectives or entities with respect to which an organization wants to keep records. Each dimension may have a table associated with it‚ called
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Data warehousing logical design Mirjana Mazuran mazuran@elet.polimi.it December 15‚ 2009 1/18 Outline Data Warehouse logical design ROLAP model star schema snowflake schema Exercise 1: wine company Exercise 2: real estate agency 2/18 Introduction Logical design Starting from the conceptual design it is necessary to determin the logical schema of data We use ROLAP (Relational On-Line Analytical Processing) model to represent multidimensional data ROLAP uses the relational
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CS304 Database System Concepts Assignment 3 Due: April 16‚ 2013 (Please submit hard copies to class or to Zheng on due date.) Name: Matric No: Q1. (10 points) Consider the E-R diagram in Figure 1‚ which models an online bookstore. a. List the entity sets and their primary keys b. Suppose the bookstore adds music cassettes and compact disks to its collection. The same music item may be present in cassette or compact disk format‚ with differing prices. Extend the E-R
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Normalcy in other words means to me to have everything up and running as required. To be stable with no corruption. Normalcy is something both Warren Gamaliel Harding along with Calvin Coolidge wish to restore in the U.S. Sadly Harding does nothing suitable to return normalcy but only to continue adding to the corruption already occurring. Coolidge on the other hand takes control after the death of Harding in 1923 and accomplished much more than Harding might have ever did. During the presidential
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Journal of Computing and Information Technology - CIT 10‚ 2002‚ 2‚ 69–84 69 A Procedure of Conversion of Relational into Multidimensional Database Schema Mladen Varga Faculty of Economics‚ University of Zagreb‚ Croatia It is universally recognized that operational information systems lean on the relational model and data warehouses on the multidimensional model. The phrase On-Line Analytical Processing (OLAP) means summarizing‚ consolidating‚ viewing‚ and synthesizing data according
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CSC 424 Introduction to Database March 27‚ 2012 Prof Emile C. Chi 1st Exam NAME______ 1) (30 points) Let R (A‚ B‚ C‚ D‚ E) be a relations with attributes A‚ B‚ C‚ D‚ E. Let F be the set of functional dependencies: A -> B‚C C‚D -> E B -> D E -> A a) Compute the closure F+ of F. Give a reason for each dependency in F+ Closure for F+: A+= (A‚B‚C‚D‚E) BC+ = (A‚B‚C‚D‚E) CD+ = (A‚B‚C‚D‚E) E+ = (A‚B‚C‚D‚E) b) Draw an E-R diagram for R. c) Is R in BCNF? Give a
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CIS 331 – Database Management Using SQL Week 2 Homework - Due: Week 3 Name __Scott Merryfield__________________ 1. Review Questions - pages 57-58 (A Guide to MySQL – Chapter 2) Questions 1 – 15 (type out the answers) 2. Review Questions - page 87 (A Guide to MySQL – Chapter 3) Questions 1 – 13 (type out the answers) 3. Premier Products - pages 87-88 (A Guide to MySQL – Chapter 3) Exercises
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Chapter 3 Data Modeling 3-23. Swan’s Supplies (Normalizing Data) The raw data is as follows: Purchase Order Number 12345 12346 Customer Customer Customer Phone Item Item Date Number Name Number Number Description Charles 01/03/12 123-8209 Dresser‚ (752) 433-8733 X32655 Baseballs Inc. X34598 Footballs Basketball Z34523 Hoops Patrice 01/03/12 123-6733 Schmidt’s (673) 784-4451 X98673 Softballs Sports X34598 Footballs SoccerX67453 balls Unit Cost Quantity
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