题目内容

Considering the following tables, ________ is a primary key. Student Table Professor Table Class Table SID Name Expected Graduation Year PID Name Tenure Year ID Name PID 123 Smith 2017 ABC Jones 1995 MGT101 Intro to Management ABC 234 Jones 2018 DEF Brilliant 2000 BUS101 Intro to Business ABC 567 Barilla 2018 GHI Genius 2000 MGT201 Intermediate Management GHI

A. Class Table: PID
B. Professor Table: Name
C. Student Table: Expected Graduation Year
D. Student Table: ID

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A data ________ is a repository of historical data that are organized by subject to support decision makers in the organization.

A. mart
B. shop
C. store
D. warehouse

Data marts can be implemented quickly than data warehouses and support control.

A. less; central
B. less; local
C. more; central
D. more; local

Data marts and data warehouses typically use ________.

A. ERP
B. OLAP
C. OLTP
D. RFID

Data marts and data warehouses are ; this means they be updated by users.

A. non-volatile; can
B. non-volatile; cannot
C. volatile; can
D. volatile; cannot