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

分包商在施工中发生的问题，由()负责协调工作。

A．业主

B．承包商

C．监理机构

D．总监理工程师