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2009-01-31 Databases

posted Jan 28, 2009, 7:30 PM by Unknown user   [ updated Apr 10, 2009, 2:13 AM by Eddie Woo ]
For further details, please refer to IPT: Flat-file & Relational Databases

Etymology of 'database'

The word comes from "data" (meaning "something that can be passed around") and basis ("something to stand on"). It is vaguely defined, with filing cabinets, whiteboards, and hard drives and such all fitting the definition of a database.

Two types of databases

  • There are flat file databases, which are simple, speedy, and versatile (multipurpose). They can not relate to each other. An example is a shopping list.
  • Relational databases are slow, complicated, and specific. They are very connected. An example is a filing cabinet.

Jacaranda textbook questions

  1. Flat file and relational are the main types.
  2. Advantages of manual: no electricity required; portable; easier to use
  3. Database Management System
  4. No, the process would be the same
  5. See below.

Databases and information tasks

 Information task  Manual  Flat file DBMS  Releational DBMS
       
       
       
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