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
metadata
In a(n) _____, nodes with the same parents are called twins or siblings.
Question 7 options:
hierarchical model
network model
relational model
object-based model
hierarchical model
In a relational database model, which operation searches data in a table and retrieves records based on certain criteria?
Question 8 options:
insert operation
join operation
find operation
select operation
select operation
In a relational database model, which operation pares down a table by eliminating columns according to certain criteria?
Question 9 options:
project operation
join operation
find operation
insert operation
project operation
In the context of big data, velocity is _________.
Question 10 options:
the speed with which the data has to be gathered and processed
the trustworthiness and accuracy of the data
the value that the collected data brings to the decision-making process
the quantity of transactions, measured in petabytes or exabytes