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<chapter id="tutorial-sql">
<indexterm><primary>relation</primary></indexterm>
<indexterm><primary>table</primary></indexterm>
- <productname>PostgreSQL</productname> is a <firstterm>object relational
- database management system</firstterm> (<acronym>ORDBMS</acronym>).
+ <productname>PostgreSQL</productname> is a <firstterm>relational
+ database management system</firstterm> (<acronym>RDBMS</acronym>).
That means it is a system for managing data stored in
<firstterm>relations</firstterm>. Relation is essentially a
mathematical term for <firstterm>table</firstterm>. The notion of