CIS 2110, Week 4 Notes
CIS 2110, Week 4 Notes CIS 2010
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This 2 page Class Notes was uploaded by Hagar Notetaker on Wednesday September 14, 2016. The Class Notes belongs to CIS 2010 at Georgia State University taught by James Senn in Fall 2016. Since its upload, it has received 82 views.
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Date Created: 09/14/16
CIS 9/14/16 Chp.5 Enterprise Data Resources Big Data Traditional enterprise data Machine-generated/sensor data Social data Images captured by billions of devices located around world o Cameras, phones, medical scanners, etc. Data Base Approach Hierarchy of Data Designing Database Entities o Person, place, thing, or event that stall or management need to know about process transaction Database Development Process Entity Relationship Database Forms Requirements Model Design Identify entities & Create Database Create Database & relationships of Design (Tables & store data Report interest (Business s Keys) Model) Queries Objectives of database management - All companies have same objectives… 1. Share same data o Minimize isolation & data siloes 2. Minimize redundancy o Ensure consistency (impossible without sources) 3. Maximize integrity o Accuracy & security (count on it to be correct & available) 4. Maximize flexibility of use o View & use to fit your requirements 5. Enabling database evolution o Accommodate change of contents & use 6. Maximize data independence CIS 9/14/16 o Views & usage do not depend on & are not constraint by how & where data is stored Hierarchy of Data Bit Byte Field Data file/table Data base University Data Base File Student Faculty John Jones Kelly Rainer Record MIS Professor Name: John Name: Position: Field Field Jones Major: MIS Kelly Rainer Professor M K P Byte Byte J (1001010) (1001101) (1001011) (1010000) Bit 0 0 Bit 1 1 What is a data base? Collection of related tables/files Each table (file) contains data about the person, place, thing or event of interest. Each row (record) contain data about single, specific instance/occurrence of person, place, thing, or event of interest Fields # Name HW1 HW2 HW3 Records 4 Michael 88 100 78 5 Tom 75 90 90 7 Alice 95 90 98