Hierarchical, Network, and Relational Databases

1
Hierarchical, Network, and Relational Databases

• March 21, 2003
• Team 5
• Grace Chen
• Jin Hong
• Elise Kamai
• Janet Lin

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Table of Contents

• Definition
• Hierarchical Model
• Network Model
• Relational Model
• Vendors and Future
• Summary
• Bibliography

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Definition

• Database
• A collection of data and the relationships
  between the data
• Stored in secondary storage

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Databases are Evolutionary

• Each database developed was an improvement of the
  other.

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Types of Relationships
One to One Relationship
One to Many Relationship
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Hierarchical Database
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Types of Relationships
One to One Relationship
One to Many Relationship
Many to Many Relationship
Stock Manager
Sales Manager
HR Manager
Clothing
Accessories
Shoes
Electronics
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Network Database
9
Relational Database
Primary Key
(Nickerson/Business and Information Systems, 2001
p.215)
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Vendors and the Future

• Vendors
• Oracle
• Microsoft
• IBM
• Future
• Object-Oriented Database Model
• Object-Relational Database Model

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March 21, 2003 Team 5 Grace Chen Jin Hong Elise
Kamai Janet Lin
Hierarchical, Network, and Relational Databases
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Bibliographies

• Alexander Lashenko, Unixspace Homepage.
• lt http//unixspace.com/context/databases.htmlgt
  (28 Jan 2003)
• This is a professional organization website
  about technology. Included information about the
  different types of databases.
• IT Division Homepage, 2000
• lt http//wwwinfo.cern.ch/db/aboutdbs/classificati
  on gt(28 Jan 2003)
• This is a professional website that provides
  database and data management information.
• Nickerson, Robert C. Business and Information
  Systems. 2nd ed. New Jersey Prentice Hall,
  2001.
• This is a textbook that contains information on
  business and information systems.
• Extropia Introduction to Databases for Web
  Developers.
• lthttp//extropia.com/tutorials/sql/hierarchical_d
  atabases.htmlgt (28 Jan 2003)
• This a professional website. Extropia is an
  open web and technology company.