HOW SOUND WORKS: The different ways that sound works is by a wave called the longitudinal wave. Like it said in source 1 "The longitudinal wave is a wave that travels in a single direction which means how loud the sound is and the pitch of the sound will vary and will depend on the amount of energy that was sent out as the wave was released’’ . so when the longitudinal wave is released it goes to the brain so that the brain can translate it and tell you what it is.Another way sound works is by hearing
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What is Reliability and integrity for database? Alvin W. Demore II University of Maryland University College Abstract In this document we will be learning what reliability and integrity to databases and how company’s uses this technique to make sure that their company is strong and safe. Reliability plays a big part in databases because you need to make sure that everything can work without failing or crashing the system. The next big part is integrity because if you don’t have security in the
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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 reason will be achieved by 70% and increase the
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A Database Project for Trinity University Canteen Submitted in Partial Fulfilment of the requirements for the Course INTE_204 (Systems Analysis & Design) By: Wilbourne N. Lomboy Roven Gareth G. Juarez Oct. 10‚ 2013 Chapter 1 Background of the Project Introduction Concessionaires converge at the two-storey University Canteen to give students a wide array of choices for snacks and meals. Presented fast-food style‚ students serve themselves
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HISTORY OF DATABASE MANAGEMENT SYSTEM With the progress in technology in the areas of processors‚ computer memory‚ computer storage and computer networks‚ the sizes‚ capabilities‚ and performance of databases and their respective DBMSs have grown in orders of magnitudes. The development of database technology can be divided into three eras based on data model or structure: navigational‚ SQL/relational‚ and post-relational. The two main early navigational data models were the hierarchical model
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Download at www.eBook12.Com Download at www.eBook12.Com This page intentionally left blank Download at www.eBook12.Com Introduction to Database Management Mark L. Gillenson‚ Paulraj Ponniah‚ Alex Kriegel‚ Boris M. Trukhnov‚ Allen G. Taylor‚ and Gavin Powell with Frank Miller Download at www.eBook12.Com Credits PUBLISHER Anne Smith ACQUISITIONS EDITOR Lois Ann Freier MARKETING MANAGER Jennifer Slomack SENIOR EDITORIAL ASSISTANT Tiara Kelly PRODUCTION MANAGER Kelly Tavares PRODUCTION
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1) Which account is designated as the owner of a relation? What privileges does the owner of a relation have? Ans: An "owner" account is given to those in control of specific relations. They have select‚ modification‚ and reference privileges on that given relation. 2) How is the view mechanism used as an authorization mechanism? Ans: A multiuser database system must selectively permit users to share data‚ while retaining the ability to restrict data access. There must be a mechanism to provide
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DataBase Concepts DataBase – a collection of information related to specific entity (e.g. organization‚ bank‚ college‚ library etc.) DBMS – (Database management system) – a application through which we can control the database i.e. we can store data into database‚ update the data and delete also we can retrieve the data from database. For doing these operation DBMS support a language called Structured Query language (SQL). SQL accomplishes many powerful tasks with a mere seven statements: SELECT
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1 Chapter 1 Database Systems Database Systems: Design‚ Implementation‚ and Management‚ Seventh Edition‚ Rob and Coronel 1 1 In this chapter‚ you will learn: • The difference between data and information • What a database is‚ what the different types of databases are‚ and why they are valuable assets for decision making • The importance of database design • How modern databases evolved from file systems Database Systems: Design‚ Implementation‚ & Management‚ 7th Edition‚ Rob
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DATABASE: A database is an organized collection of data. The data is typically organized to model relevant aspects of reality (for example‚ the availability of rooms in hotels)‚ in a way that supports processes requiring this information (for example‚ finding a hotel with vacancies). A general-purpose database management system (DBMS) is a software system designed to allow the definition‚ creation‚ querying‚ update‚ and administration of databases. Well-known DBMSs include MySQL‚ PostgreSQL‚ SQLite
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