Cornerstone Data Systems provides Oracle database consulting services including database administration, high availability solutions, disaster recovery, performance tuning, and audits. They offer on-site and remote DBA support either as a fixed fee or a la carte. Their services help ensure business objectives around high availability and disaster recovery are met through best practices and proven Oracle technologies like Real Application Clusters, Data Guard, and Maximum Availability Architecture. They also perform database environment audits and health checks to assess security, storage, backups, and overall infrastructure.