1. Describe the relations that would be produced by the following relational algebra operations a) ПhotelNo(σprice>100(Room)) It will produce a single attribute (hotelNo) giving the number of hotels room prices greater 100. b) σHotel.hotelNo=Room.hotelNo(Hotel X Room) A join produce of hotel and room containing all the attributes of both. c) ПhotelName(Hotel Hotel.hotelNo=Room.hotelNo (σprice>100(Room))) It is a join of hotel and room with the price greater than 100. d) Guest(σdateTo>’1-June-12’(Booking)
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are given. In spite of that ‚ with data base marketing and data mining ‚ the questions like “ who is our customers who have common shoping behaviour?( to aggregate)” or “What are other products or services sold with credit card ?( to associate ) can be answered. Basket analysis aims to find pozitive and negative correlation between sold products. If an example is given ‚the research which was reconnoitred by TESCO one the biggiest supermarket of U.K‚ have to be the first minded. In Tesco’s diapers
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Hospital-Based Database System (A Case Study of BIRDEM) Rosina Surovi Khan Department of Computer Science and Engineering Ahsanullah University of Science and Technology (AUST) Dhaka‚ Bangladesh Email: surovi99@yahoo.com Abstract— As technology advances‚ information in different organizations of Bangladesh can no more be maintained manually. There is a growing need for the information to become computerized so that it can be suitably stored. This is where databases come into the picture. Databases are convenient
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How many records does the file contain? How many fields are there per record? There are 5 filds‚ each with 7 records 2. What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure? Some of the project managers are mentioned several times‚ that would cause duplication in the city database. 3. If you wanted to produce a listing of the file contents by last name‚ area code‚ city‚ state‚ or zip code‚ how would
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Database Project #1: Grocery Store Database DatabaseName: GroupStoreProject Project Description Today‚ there are many grocery store and grocery list apps on the market. Our task was to exercise our creativity and create a relational database to support a grocery list website for a corresponding application. First‚ we created the data model containing entities named Category‚ Chain‚ List‚ List_Item‚ Product‚ Section‚ Shelf‚ Shelf_Inventory‚ Shopper‚ Shopper_List‚ Store‚ and Store_Inventory.
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Phase 1 Discussion Board 2: Object Oriented Techniques IT110_1302A-01 Introduction to Programming Instructor: Steve Montgomerie Jeffrey Graham April 10‚ 2013 Colorado Technical University In order to better understand object oriented programming (OOP) this paper will discuss the similarities and differences between OOP and procedural programing (PP). It will also provide information on four basic object oriented concepts of objects‚ classes‚ methods‚ and polymorphism. The some similarities
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CheckPoint: Object-Oriented Data and Processes Identify a task you perform regularly‚ such as cooking‚ mowing the lawn‚ or driving a car. Write a short‚ structured design (pseudocode only) that accomplishes this task. Think about this task in an object-oriented way‚ and identify the objects involved in the task. Identify how you can encapsulate the data and processes you identified into an object-oriented design. Describe the architectural differences between the object-oriented and structured
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Database Design Paper Joey Turner DBM 380 03/25/2015 Professor Kevin Judge DATABASE A database is a digital storage area that helps people keep track of things. A database can also be considered a digital list because in the real world work environment keeping track of lists is very valuable to an organization but in other cases a simple list is not agile and versatile enough to avoid data inconsistencies and other problems that may arise. Databases are valuable because they are not only objects
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Research Paper Comparison of the Enterprise Functionalities of Open Source Database Management Systems April 26‚ 2005 Herausgeber und Urheber Fabalabs Software GmbH‚ Honauerst. 4 A-4020 Linz Bearbeiter: Dipl.-Ing. Daniel Fallmann Dipl.-Ing. Helmut Fallmann Dipl.-Ing. Andreas Pramböck Horst Reiterer Dipl.-Ing. Martin Schumacher Dipl.-Ing. Thomas Steinmaurer Univ.-Prof. Dr. Roland Wagner Research Paper Page 1 Copyright © Fabalabs Software GmbH‚ 2004-2005‚ Honauerstr. 4 A-4020 Linz Index
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Workshop 4 Database Administration Tools There are three types of Database Administration Tools‚ Oracle Enterprise Manger‚ Microsoft SQL Server Enterprise Manager and Sybase Central. This paper will discuss each one. The database tool and utility applications are the primary administrative components of Oracle Enterprise Manager. You can use these applications to perform most of your DBA administration tasks. Some of the design features of the applications allows you to use the graphical interface
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