
Data Management for BA Day I
Authored by Yulia Kosarenko
Computers
Professional Development
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What ERD building blocks can you extract from this sentence: “A physics textbook is co-authored by three scientists”.
“Textbook” is an entity, “scientists” are attributes, and “authored by” is a relationship.
“Textbook” and “scientist” are entities, “physics” is an attribute of the “textbook”, and “authored by” is a relationship.
“Textbook” and “author” are entities, “scientist” is an attribute of the “textbook”, and “authored by” is a relationship.
We cannot extract anything from this sentence.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
At the end of an educational video, the students are asked to rate it on a scale from “Excellent”, to “Good”, “Just OK” and “Not useful”. How would you describe the data type that represents these ratings?
Ordinal
Nominal
Quantitative
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The instructor has received a report showing which students have watched the course video. What data type would you choose to capture whether each student has completed watching the video?
String
Integer
Boolean
Decimal
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is true about XML (eXtensible Markup Language)?
All XML tags must be in lower case
Spaces are allowed in the tag names, but not between the XML elements
Closing tag must be the same as the starting tag
All XML tags are case sensitive
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which is not a correct name for an XML element?
TAX
income_tax_2021
2021income
_incometax
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What key elements must be present in an ERD?
Entities and their attributes.
Entities, attributes, relations and dimensions.
Facts and entities.
Entities and relationships.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the most appropriate name for a data entity that will capture online academy users?
StudentName
Student
Students
Student0001
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