Oracle announced its getting into the Infrastructure as a Service market, trailing Amazon, Google, IBM, Microsoft, HP, Rackspace and a host of other IT giants already serving this market. Many of Oracle’s customers have yet to move much if any of their applications or data to the public cloud for fear of security breaches. Oracle is hoping its new database, dubbed 12c (the “c” stands for cloud) will convince them to make the move. This database supports multi-tenancy, or the ability to securely keep many sets of data in one place. The only problem is, existing Oracle customers will have to re-write their apps to support this new database and at that point, why not choose another database vendor? Given the renaissance occurring right now in the database market and all the new NoSQL databases emerging that are designed for cloud scale, I think many will.