SQL server

SQL Server Compact Edition (single-user version):

Microsoft SQL Server Compact 3.5 SP2 x86
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Microsoft SQL Server Compact 3.5 SP2 x64
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SQL Server Express (network version):

Microsoft SQL Express Server 2008 R2 SP2 x86
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URL: Download

Microsoft SQL Express Server 2008 R2 SP2 x64
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URL: Download

Microsoft SQL Express Server 2008 R2 SP3 x86
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Microsoft SQL Express Server 2008 R2 SP3 x64
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In the event that the installation of SQL Express requires support for newer "Windows Installer":

Windows Installer 4.5 (hotfix)
URL: Download

In the event that the installation of SQL Express requires support for "Windows PowerShell":

Windows PowerShell
URL: Download

In the event that Simple Shop installer requires support for SP3 (only Windows XP):
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