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Databases. Basic Data Management Concepts 2 Database  Collection of all the data related to a particular topic or purpose -- for example, student data,

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Presentation on theme: "Databases. Basic Data Management Concepts 2 Database  Collection of all the data related to a particular topic or purpose -- for example, student data,"— Presentation transcript:

1 Databases

2 Basic Data Management Concepts 2 Database  Collection of all the data related to a particular topic or purpose -- for example, student data, customer data or product data Database management system (DBMS)  Software used to access database

3 When do I interact with databases Register for classes Shopping Finding midi files on the CIS 1055 website Flight registration systems Cherry & White Pages Purchasing a book from Amazon.com Paying your phone bill on line 3

4 Data Organization Garner Julia30 Simpson Ave 555-3432 Garrett Allen1222 Elm Street 555-9876 Gieger Carl25 West Ave 555-2702 Geiser Gary712 Chestnut 555-1112 Goucher Gerard17 Asbury Ave 555-2956 4 Records Fields File or Table A collection of one or more related tables Database

5 The Organization/Hierarchy of Data 5 Field  Name, number, or combination of characters that describes some aspect of an object Record  Collection of related fields File  Collection of related records Database  Collection of integrated and related files

6 6

7 What can I do with a DBMS Enter data quickly and easily Organize records in different ways Locate specific records quickly Eliminate data Connect files with related information Create Reports Create Queries 7

8 The Database Approach to Data Management 8 Database approach  Multiple application programs share a pool of related data  Increased flexibility in the use of data  Requires a database management system (DBMS)

9 Queries Built thru SQL (Structured Query Language) First Name, Last Name and Annual Fee MiltonBrewer$90.00 LouellaDrake$40.00 ElenaGupta$55.00 AdelbertRuiz$80.00 BenjaminTu$37.0 SQL: SELECT FIRSTNAME, LASTNAME, ANNUAL FEE FROM: MEMBER, MEMBERSHIP PLANS WHERE MEMBER.MEMBERSHIP CODE = MEMBERSHIP PLANS.MEMBERSHIP CODE ORDER BY LAST NAME 9

10 Relational Database 10 Sales NoTerritory 1121 1132 1143 1154 1165 1176 Sales NoLNameFName 112BelleJamie 115MorrisDave 114AllanWil 113ShawDanny 116MichaelsWilson 117CrozierJudy Sales NoLNameFNameTerritory 112BelleJamie1 113ShawDanny2 114AllenWill3

11 Database Structures 11 Types of Databases  Relational  Object-Oriented  Hierarchical, Network, Multi-Dimension


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