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COB 204 Notes Week 2

by: Hannah Schwenk

COB 204 Notes Week 2 COB 204

Hannah Schwenk
GPA 3.68

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About this Document

Week 2
Computer Information systems
John Karabelas
Class Notes
Computer Science
25 ?




Popular in Computer Information systems

Popular in Statistics

This 2 page Class Notes was uploaded by Hannah Schwenk on Sunday September 11, 2016. The Class Notes belongs to COB 204 at James Madison University taught by John Karabelas in Fall 2016. Since its upload, it has received 18 views. For similar materials see Computer Information systems in Statistics at James Madison University.


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Date Created: 09/11/16
COB 204 Notes 9/5 – 9/9  Development in the IS workplace o IS is built for business professionals o Take an active role in specifying system requirements to ensure the system meets the need of your company  Managing Information System o Difficult and Complex  Strategic Value  Acquiring, Operating and Maintaining  Constant evolution of IS  Information o Knowledge derived from data, recorded as facts and figures o Meaningful Context  Necessary Data Characteristic o Accurate o Relevant o Timely o Barely Sufficient (No info overload) o Cost efficient  Functional Area o Different IS departments within a firm  Dashboard o Traceable data set up to benefit the business user  Purpose of a Database o Organize and keep track of data o Keep track of multiple themes  Single Theme o Store in a Spreadsheet  Multiple Themes o Store in a database  Difficulties of Data Storage o Data amounts increase exponentially over time o Data is scattered throughout an organization o Data is generated by multiple sources o Constant new sources of data o Changing legal requirements for data storage  Database Management Systems should MINIMIZE o Redundancy o Data Isolation o Data Inconsistency  Database Management Systems should MAXIMIZE o Data Security o Data Integrity o Data Independence  Data Hierarchy o Record/Row o Field/Box o Byte o Bit  Key (primary key) o A column or group of columns that identifies a unique row in a table o Every table must have a primary key  Foreign Key o Columns outside of the primary key  Metadata o Data that describes other data  DBMS operations o Read o Insert o Modify/Update o Delete o Provides tools to assist in administration of the database


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