I have 30+ years of extensive IT experience both on mainframe and middleware.
In the last 10 years, my works were mainly on Database and Datawarehouse administration areas working as a DBA on DB2 for z/OS, DB2/LUW, MS SQL Server, Cognos and Decision Steam.
As Database/Data Warehouse administration, my duties include design and implement physical data models, monitor and tune databases / SQL performance, analyze data, maintain data mapping documents, data replication, support system testings for all SDLC phases of projects, install and upgrade database software and tools.