Coursera Business Intelligence - The Path to Insights Data Models and Pipelines - Weekly Challenge 1 - Questions Answers
Coursera Business Intelligence - The Path to Insights Data Models and Pipelines - Weekly Challenge 1 - Questions Answers
1. Which of the following statements correctly describe Online Transaction processing (OLTP) and Online Analytical Project Processing (OLAP) tools? Select all that apply.
Ans. Online Analytical Processing (OLAP) tools are optimized for analysis in addition to processing and can analyze data from multiple databases.
2. Business intelligence professionals use design patterns to apply relevant measures and facts to what process?
Ans. Creating a data model
3. Fill in the blank: A foreign key is a field within a database table that is a in another table.
Ans. primary key
4. In a dimensional model, what might dimensions represent? Select all that apply.
Ans.
Supporting details
Attributes
5. Fill in the blank: In a dimensional model, a foreign key is used to connect a table to the appropriate fact table.
Ans. dimension
6. How many fact tables exist in a star schema?
Ans. One
7. A business intelligence team is performing a database migration to improve the state of their database schemas. Which of the following activities may occur during their database migration? Select all that apply.
Ans.
Splitting existing data fields
Adding new data tables
Changing data types
8. In row-based databases, each row in a table is an instance or an entry in the database. How are details about that instance recorded and organized?
Ans. By column or By Row (The answer is not confirmed from my side)
9. A business intelligence team is working with a database system that stores and analyzes data in the same place. What type of database system are they using?
Ans. Combined database system
10. There are four key elements within database schemas. The first is relevant data. What are the other three? Select all that apply.
Ans.
Unique keys for every database entry and object
Names and data types for each column in each table
Consistent formatting across data entries
11. Which of the following statements accurately describe the loading stage of the ETL process? Select all that apply.
Ans.
Data is delivered to its target destination.
Once the data has been delivered, it can exist within multiple locations.
Once the data has been delivered, it can exist in multiple formats.
12. Object-oriented programming languages data objects with code, enabling them to be used again later.
Ans.
interpret and analyze or label and define (The answer is not confirmed from my side)
OTHER ANSWERS WILL BE UPLOADED SHORTLY
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