Mainframes were the core of IBM's business model for decades, and as the most recent third-quarter financial results (mentioned above) show, mainframes continue to be IBM's unique value proposition to business. Increasingly, enterprises are focusing on building and maintaining internal clouds to deliver new functionality, and the zEnterprise provides all the high availability, security and scalability needed to support such efforts. To stay on top of all the trends, subscribe to Database Trends and Applications magazine.