http://www.microsoft.com/en-au/download/details.aspx?id=29062

Click the Red Download button.

Select the version you need and click Next.

SQLEXPRWT_x86_ENU.exe - 32 Bit version with SQL Management Studio\\r SQLEXPRWT_x64_ENU.exe - 64 Bit version with SQL Management Studio

Click Save File.

Run the file you downloaded above

Select New SQL Server Stand-alone Installation

Click I Accept and click Next

SQL Express will request to install updates, click Next

Click Next at Feature Selection

Create a new Named Instance called SAMBAPOS3, and click Next

Make sure both services are set to Automatic Startup Type. Click Next.

Select Mixed Mode, and enter a password for the database (remember this password for later), I suggest sambapos. Click Next.

Click Next.

SQL Express will now install – this may take several minutes.

Once installation is complete, click Close.

Close the SQL Server Installation Window.

Run SQL Server Configuration Manager located under Microsoft SQL Server 2012 in your start menu.

Expand SQL Server Network Configuration, and select Protocols for SAMBAPOS3 Enable both Named Pipes & TCP/IP Protocols.

A warning message will appear when you enable the protocols, click OK.

Go to SQL Server Services, select SQL Server (SAMBAPOS3) and click the Restart icon.

Use the following line in SambaPOS Local Settings to use SQL Express 2012

Data source=localhost\SAMBAPOS3; User Id=sa; Password=sambapos

For all other computers on your network change localhost to your computers name that is running SQL Express 2012. For example

Data source=John-PC\SAMBAPOS3; User Id=sa; Password=sambapos

Network connection issues are usually caused by Firewall programs running. Due to SQL Express using Dynamic Ports, it makes it hard to configure access through firewalls. The easiest solution is to turn off all firewalls.

If you feel the need to have the firewall running, then look at this article http://technet.microsoft.com/en-us/library/cc646023.aspx

Turning off your Windows Firewall does to affect the security of your computers, as long as you have a decent Internet Router with Firewall to stop external attacks, and you use secure passwords for your Wifi Access Points to stop internal attacks.

If installing SQL Express 2012 for SambaPOS v2, then I suggest using SAMBAPOS for the Named Instance. This keeps both V2 & V3 databases running completely independent of each other.

Installation of SQL Express 2008

Installation of SQL Express 2008 is exactly the same as 2012, with the exception of Product Updates.

The installation files are available here http://www.microsoft.com/en-au/download/details.aspx?id=22973

Upgrading from SQL Express 2008

When you run the SQL Express 2012 setup file that you downloaded, select Upgrade and follow the Wizard.

Created By : John Sheather