> For the complete documentation index, see [llms.txt](https://docs.rmhpos.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rmhpos.com/installation/install-microsoft-sql-server/sql_topics/sql-conclusion.md).

# Conclusion

Microsoft SQL Server is a critical component of any RMH implementation. SQL Server Express is usually adequate for most store implementations. However, store may need to upgrade to SQL Server if their store database grows too large or if they require more memory or processing power to optimize system performance.

If you are new to using SQL Server, we highly recommend that you learn more about installing and maintaining SQL Server so you can provide an exceptional experience for your RMH customers. Microsoft has excellent learning materials on their [learning portal](https://learn.microsoft.com/en-us/sql/?view=sql-server-ver16).


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