A.主動數(shù)據(jù)采集 B.購買數(shù)據(jù) C.網(wǎng)絡(luò)下載數(shù)據(jù)
A.發(fā)現(xiàn)數(shù)據(jù) B.查找數(shù)據(jù) C.處理數(shù)據(jù) D.通過數(shù)據(jù)分析來挖掘數(shù)據(jù)背后的價值