A.單鍵索引B.復(fù)合索引C.地理空間索引D.數(shù)組索引
A.insert,即可插入單個(gè)文檔,也可插入多個(gè)文檔B.addOne,即可插入單個(gè)文檔,也可插入多個(gè)文檔C.insertMany,僅能插入多個(gè)文檔D.addMany,僅能插入多個(gè)文檔
A.db.stus.dropIndex({sname:1})B.db.stus.dropIndex(’sname_1’)C.db.stus.dropIndex(’sname_Index’)D.db.stus.dropIndexes()