---
title: System databases
description: System databases in Parallel Data Warehouse (PDW).
author: mzaman1 
ms.prod: sql
ms.technology: data-warehouse
ms.topic: conceptual
ms.date: 04/17/2018
ms.author: murshedz
ms.reviewer: martinle
ms.custom: seo-dt-2019
---

# System databases in Parallel Data Warehouse (PDW)
System databases are databases that SQL Server PDW uses to manage users, databases, and temporary data. SQL Server PDW includes the following system databases: master, and tempdb.  
  
## System Database Topics  
  
-   [master Database](master-database.md)  
  
-   [tempdb Database](tempdb-database.md)  
  
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## See Also  
[Common Metadata Query Examples &#40;SQL Server PDW&#41;](../sqlpdw/common-metadata-query-examples-sql-server-pdw.md)  
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