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Terry Purcell is a seasoned technology professional with extensive experience in database optimization and performance consulting. Currently serving as the Senior Manager and Architect for the Xpand Query Optimizer at MariaDB Corporation since May 2021, Terry previously held a significant role at IBM as a Senior Technical Staff Member, leading design efforts for the Db2 for z/OS Optimizer and machine learning initiatives. Prior to that, Terry was a Senior SQL Performance Consultant at Yevich Lawson and Associates, recognized as an expert in SQL Performance and Optimization with DB2 for z/OS. Additional experience includes roles as a DB2 Consultant at CPT Global and a Database Administrator at Coles Myer, alongside an early career as an Application Programmer at ANZ. Terry holds a Bachelor of Information Technology from Swinburne University of Technology.