Databases



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Databases

UrSU

IT Department

2020

Course Contents

  • Introduction
  • Database Terminology
  • Data Model Overview
  • Database Architecture

INTRODUCTION

  • What a Database Is and Is Not
  • Models of Reality
  • Why use Models?
  • A Map Is a Model of Reality
  • A Message to Map Makers
  • When to Use a DBMS?
  • Data Modeling
  • Process Modeling
  • Database Design
  • Abstraction

What a Database Is and Is Not

The word database is commonly used to refer to any of the following:

  • your personal address book in a Word document
  • a collection of Word documents
  • a collection of Excel Spreadsheets
  • a very large flat file on which you run some statistical analysis functions
  • data collected, maintained, and used in airline reservation
  • data used to support the launch of a space shuttle

Models of Reality

REALITY

  • structures
  • processes
  • DML
  • Database system
  • A database is a model of structures of reality
  • The use of a database reflect processes of reality
  • A database system is a software system which supports the definition and use of a database
  • DDL: Data Definition Language
  • DML: Data Manipulation Language

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