SQL
SQL databases, or relational databases, have been around a long time. Despite being the backbone of almost every IT operation, a huge number of developers don't know how to get the best out of an SQL database. We do.
We've worked with relational database management systems and SQL for many years. Our core experience is with IBM DB2 and Microsoft SQL Server. We have tuned, clustered and replicated these databases to within an inch of their lives.