Partition-based Projection Parallel projection needs a lotTran,DB fcmp of disk space abm Partition projection saves it fb p fcmp p-proj DBm-proi DB b-proj DB a-proj Dbc-proiDB DB farm ca fca fcam fca am-proj DB cm-proi DB fc fc fc February 4, 2021 Data Mining: Concepts and Techniques 35February 4, 2021 Data Mining: Concepts and Techniques 35 Partition-based Projection ◼ Parallel projection needs a lot of disk space ◼ Partition projection saves it Tran. DB fcamp fcabm fb cbp fcamp p-proj DB fcam cb fcam m-proj DB fcab fca fca b-proj DB f cb … a-proj DB fc … c-proj DB f … f-proj DB … am-proj DB fc fc fc cm-proj DB f f f …