Chapter 1. What Is a Relational Database?

 

         A fish must swim three times—         in water, in butter, and in wine.

 
 --Polish proverb

Topics Covered in This Chapter

  • Types of Databases

  • Early Database Models

  • The Relational Database Model: A Brief History

  • Relational Database Management Systems

  • Summary

Types of Databases

There are two types of databases found in database management today, operational databases and analytical databases.

Operational databases are used in the day-to-day life of an organization, institution, or business. They are primarily used wherever there is a need to collect, maintain, and modify data. This type of database stores dynamic data, which means that the data changes constantly and reflects up-to-the-minute information. ...

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