Which of the following are two popular data visualization platforms?
Question 1 options:
Excel and PowerPoint
Apache and Cassandra
OLTP and OLAP
Power BI and Tableau
Power BI and Tableau
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
random
Data warehouses are sometimes called hypercubes because they _____.
Question 3 options:
are function oriented
store multidimensional data
capture raw transaction data
manage transactions
store multidimensional data
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
Analytics may be misinterpreted and offer support for a decision that may not be ethical
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.
Programs and data are independent.
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