Database Modeling and Design: Logical Design 4th Edition Toby Teorey‚ Sam Lightstone‚ Tom Nadeau Lecture Notes Contents I. Introduction ................................................................………...……2 Relational database life cycle 3 Characteristics of a good database design process 6 II. The Entity-Relationship (ER) Model …………...……………….7 Basic ER concepts 7 Ternary relationships 11 III. The Unified Modeling Language (UML)………...…………….13 Class diagrams 13 Activity
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BABCOCK UNIVERSITY ILISHAN REMO OGUN STATE PROJECT PROPOSAL IN PARTIAL FULFILLMENT OF THE COURSE SOFTWARE ENGINEERING COMPUTER SCIENCE ON HOTEL MANAGEMENT SYSTEM GROUP 8 PROJECT MEMBERS: 1. XXXXXXX 2. XXXXXXXXXXX 3. XXXXXXXXXXXX 4. XXXXXXXXXX 5. OBRUTSE ONAJITE 09/1635 6. OKOROSOBO TEMITOPE 7. OLAJIDE SEGUN 8. XXXXXXXXXX 9. XXXXXXXX 10. XXXXXXXXXX PROJECT MANAGER: MRS AYITE 1. INTRODUCTION A. BACKGROUND
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Files and Relational Databases What is a file? • contains groups of records used to provide information for operations‚ planning‚ management and decision making. • can be used for storing data for an indefinite period of time‚ or they can be used to store data temporarily for a specific purpose. FILE TYPES • Master Files -- contain records for a group of entities. The attributes may be updated often‚ but the records themselves are relatively permanent. These files
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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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MANAGEMENT INFORMATION SYSTEMS Dormitory Database By Serpil Erdoğan and Barış Çimen May‚24‚2011 For: Assistant Professor Sona Mardikyan MIS132:Introduction to Database English Table of Contents Page Introduction..............................................................................................................................4 1.General View of the Database.........................................................
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PhyloInformatics 7: 1-66 - 2005 Relational Database Design and Implementation for Biodiversity Informatics Paul J. Morris The Academy of Natural Sciences 1900 Ben Franklin Parkway‚ Philadelphia‚ PA 19103 USA Received: 28 October 2004 - Accepted: 19 January 2005 Abstract The complexity of natural history collection information and similar information within the scope of biodiversity informatics poses significant challenges for effective long term stewardship of that information in electronic
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Sheena M. Hunt Database Paper DBM/381 University of Phoenix Healthcare database systems are critical in health care. Databases are used frequently in healthcare. There are different types of databases. This paper will define health care database systems and describe how databases are used across the health care industry. It will also explain the different database architectures including the relational architecture and describe the needs of database users across the health care continuum
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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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I. Column Oriented Database A column-oriented DBMS is a database management system (DBMS) that stores data tables as sections of columns of data rather than as rows of data. In comparison‚ most relational DBMSs store data in rows. This column-oriented DBMS has advantages for data warehouses‚ customer relationship management (CRM) systems‚ and library card catalogs‚ and other ad hoc inquiry systems where aggregates are computed over large numbers of similar data items. It is possible to achieve
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acceptance testing stage and the hardware is already in place. During the development of the system‚ the team realized that the existing database platform was inadequate to the new system; hence‚ they suggested using more modern database environment which will cost the company additional licensing costs. In parallel to this development‚ we will be releasing our new product which is greatly beneficial to farmers locally and abroad. The goals of the company to decrease the use of pesticide for environmental
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