Which of the following are two popular data visualization platforms?

Question

Question 1 options:

Excel and PowerPoint

Apache and Cassandra

OLTP and OLAP

Power BI and Tableau

Answer 1

Power BI and Tableau

Answer 2

In a(n) _____ access file structure, records can be accessed in any order, regardless of their physical locations in storage media.
Question 2 options:

sequential

random

indexed

direct

Answer 3

random

Answer 4

Data warehouses are sometimes called hypercubes because they _____.
Question 3 options:

are function oriented

store multidimensional data

capture raw transaction data

manage transactions

Answer 5

store multidimensional data

Answer 6

Which of the following is not considered an advantage of Power BI?
Question 4 options:

Analytics may be misinterpreted and offer support for a decision that may not be ethical

Seamless integration with other data and existing applications

Creation of personalized dashboards for different users with diverse information needs

Delivery of actionable information with high speed, accuracy, and security

Answer 7

Analytics may be misinterpreted and offer support for a decision that may not be ethical

Answer 8

Which statement is true of a flat file system?
Question 5 options:

Same data can be stored in more than one file.

Programs and data are independent.

Complex requests can be handled easily.

It requires very less storage space.

Answer 9

Programs and data are independent.

Answer 10

In data warehouses, _____ is information about data-its content, quality, condition, origin, and other characteristics.
Question 6 options:

metadata

big data

summary data

raw data

Answer 11

metadata