> ## 1 Introduction

> Mnemosyne is the query language of Mnesia and provides a simple syntax for complex queries.

> `Mnesia` is a distributed DataBase Management System, utilized for telecommunications applications and other Erlang applications which require continuous operation and soft real-time properties. Mnesia is part of the Open Telecom Platform (OTP), which is a control system platform for building telecommunications applications.

> ### 1.1 Scope and Purpose

> This manual is included as a part of the OTP document set. It describes how to use Mnemosyne queries. Programming constructs are described, and numerous programming examples are included to illustrate the use of Mnemosyne.

> ### 1.2 Pre-requisites

> It is assumed that the reader is familiar with system development principles and database management systems. Readers are also assumed to be familiar with the Erlang programming language in general, and the `Mnesia` application in particular.

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