Question: 7.(1pts) Please answer whether each statement about column-based DBMS is true or false. a. Data are stored in the disk column by column b. It

7.(1pts) Please answer whether each statement about column-based DBMS is true

7.(1pts) Please answer whether each statement about column-based DBMS is true or false. a. Data are stored in the disk column by column b. It is suitable for update-intensive application c. Column representation avoids reads of unused attributes

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9. Distributing evaluation materials (e.g., tests, reaction measures, surveys).

7. Having backup equipment (e.g., paper copy of slides, an extra overhead projector bulb) should equipment fail.

10. Facilitating communications between trainer and trainees during and after training (e.g., coordinating exchange of e-mail addresses).