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Chapter 1. Introduction > What Is a Relational Database?

What Is a Relational Database?

The concept of a relational database is not new. It was originally developed back in 1970 by Dr. E.F. Codd. He laid down the theory of relational databases in his seminal paper entitled “A Relational Model of Data for Large Shared Data Banks” published in Communications of the ACM (Association for Computing Machinery), Vol. 13, No. 6, June 1970.

The basic concepts of a relational database are fairly easy to understand. A relational database is a collection of related information that has been organized into structures known as tables. Each table contains rows that are further organized into columns. These tables are stored in the database in structures known as schemas, which are areas where database users may store their tables. Each user may also choose to grant permissions to other users to access their tables.


  

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