Client Access Licenses (CALs) are required for each device or user that accesses the features and services of Microsoft SQL. User CALs are likely to be more cost effective than Device CALs if there are multiple devices per user (for example, a user has a laptop and handheld computer accessing SQL Server)

SQL Server 2005 is designed to help enterprises address these challenges. This next-generation data management and analysis solution delivers increased security, scalability, and availability to enterprise data and analytical applications, while making them easier to build, deploy, and manage.

Microsoft Open License Business is a software volume licensing program designed for customers who order as few as five licenses. After the initial order, customers can benefit from volume pricing for all licenses for the remainder of the term of their Open License authorization number. This product comes pre-bundled with 5 CALs. You can order additional CALs, if needed.