Microsoft SQL Server 2012 Standard is an application from Microsoft for data management. Its particular strengths lie in business intelligence and business-critical applications, as well as in cloud integration in accordance with your wishes and needs. The standard edition offers a selection between a server+CAL and a core-based license, with 32-bit and 64-bit versions available.
With a user CAL, you acquire a CAL for one user, who can then access the server software to use its services. The user CAL is completely independent from the device being used for access.