What is a database? * A database is a structured 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). * The term database is correctly applied to the data and their supporting data structures‚ and not to the database management system (DBMS). The database data collection
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Normalization of Database Tables Introduction to Normalization of Database Tables Normalization of Database Tables l Introduction to Normalization of Database Tables 4 4 4 ISM 602 Dr. Hamid Nemati 4 4 4 Functional Dependency l Introduction to Normalization of Database Tables l l A Functional Dependency Is A Relationship Between Or Among Attributes Such That The Values Of One Attribute Depend On‚ Or Are Determined By‚ The Values Of The Other Attribute(s)
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Database Design Scenario Currently a school uses a non-computerised database system to store the following information about its students: roll class‚ surname‚ first name‚ guardian ’s name‚ address‚ student ’s date of birth‚ gender‚ sport house‚ emergency-contact telephone number‚ mailing name‚ list of subjects offered‚ and subjects in which the student is enrolled. The system takes up a large amount of space‚ has many duplicated entries some of these with mistakes and it is time consuming
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Career Investigation: Database Administrator Keith Hudson Davenport University FRSM100‚ Career and Education Seminar Aura Gardner June 26 11‚ 2013 Definition of Success Success in my opinion can only be defined as what was left behind to be experienced or built upon for the next generation. This would be a legacy left to others which speak to your contribution to society and family. Material possession and financial gain does not identify success‚ but could be a benefit of success
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Database management systems A database management system (DBMS) consists of software that operates databases‚ providing storage‚ access‚ security‚ backup and other facilities. Database management systems can be categorized according to the database model that they support‚ such as relational or XML‚ the type(s) of computer they support‚ such as a server cluster or a mobile phone‚ the query language(s) that access the database‚ such as SQL or XQuery‚ performance trade-offs‚ such as maximum scale
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Databases in My Organization CIS319: Computers and Information Systems Abstract Databases have been in use since the early days of computing programs. An Information Technology services company‚ such as Getronics‚ not only utilizes databases for information and record management‚ it earns revenue by providing database management services. Getronics uses Microsoft SQL Server 2000 as its database software. The clients that contract Getronics for Information Technology services rely and
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Whatis.com (2004) defines a database as "a collection of information that is organized so that it can easily be accessed‚ managed‚ and updated." In my current job at Wellco Tank Trucks‚ Inc.‚ we do not use any type of databases in the daily operations of our business. My only job that involved regular use of a database was at Chilcutt Direct Marketing (CDM) in Oklahoma City‚ Oklahoma. From February 2003 to June 2004‚ I was an Account Executive of Brokerage at CDM. CDM is a direct marketing company
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A hypermedia database is a computer retrieval system. The database allows the user to access texts‚ video and audio recordings and photographs. Files are stored according to subject. Hypermedia Database Hypermedia database comprises a set of interconnected multimedia web pages. In this type of database‚ information is stored online and the data can be accessed by several users at a time. Hypermedia‚ an extension of the term hypertext‚ is a nonlinear medium of information which includes graphics
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Assignments Requirements 1. Look up the definition of functional dependency. Can you find a good example? In relational database theory‚ a functional dependency is a constraint between two sets of attributes in a relation from a database. Cars Suppose one is designing a system to track vehicles and the capacity of their engines. Each vehicle has a unique vehicle identification number (VIN). One would write VIN → Engine Capacity because it would be inappropriate for a vehicle’s engine to have
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characters in a character set but of definable variable length.Stores binary string values in hexadecimal format. BLOB is defined to be a variable length. (Oracle also has CLOB and NCLOB‚ as well as BFILE for storing unstructured data outside the database.) | Number | NUMERICINTERGER(INT) | Stores exact numbers with a defined precision and scale.Stores exact numbers with a predefined precision and scale of zero | Temporal | TIMESTAMPTIMESTAMP WITH LOCAL TIME ZON | Stores a moment an event occurs
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