影响肿瘤发生的内在因素有（）。

A.性别与年龄

B.遗传因素

C.内分泌因素

D.免疫因素

E.种族因素

A data warehouse is a subject-oriented data set used for reporting and analusis. Data warehouses can be subdivided into ( ). Which store subsets of data from a warehouse.

A. OLTPs

B. transactions

C. data sarts

D. OLAPs