The packing of spraying glossy agent is studied in this paper. Selectivefactor of dissoluble matter and propellant is discussed. By orthogonal experiment the best formulation is given.
The filter factor indicates how selective the predicate is.
过滤因子表示谓词的选择性有多强。
3
According to the annotation information in the figure, the table reference CUST_CUSTOMER (CCUS) has two local predicates which are very selective, with filter factor 0.00727 and 0.004, respectively.