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Question 1 of 10
1. Question
Maria, a senior database manager, wants to create a new DB for the sales department. She needs to create 2 tables, Employees and Sales respectively. The Employees table contains a single row representing an employee with each employee assigned a unique id (primary key). The second table, Sales, contains individual sales records associated with the employee who made the sale.
Which of the following database types will Maria implement?
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Question 2 of 10
2. Question
A web developer which develops an e-commerce marketplace designs its database to capture, store and process data from transactions in real-time. The e-commerce platform will deal with many standard and straightforward queries such as insert, delete, and update and the data will be stored in 3NF (third normal form).
In which of the following databases would the developer store the data?
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Question 3 of 10
3. Question
A business analyst requests an analysis of data to display a table of all of a company’s cloth products that were sold in the UK in June, compare the sales figures with those in September, and then compare them with other product sales in the UK over the same period.
Which of the following methods enables the data scientist to extract and query data in order to analyze it from different angles?
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Question 4 of 10
4. Question
You have been tasked to create the login form for the website of your client. You design the database for the login form but you forgot to add the column that keeps a boolean type (0/1) which shows if a user has an account or not. If a user has an account, then the database should be stored the value 1, alternatively the value 0.
Which of the following data types should you use to complete the database?
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Question 5 of 10
5. Question
Which of the following statements BEST describes the difference between discrete and continuous data types?
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Question 6 of 10
6. Question
Drag and drop the data file formats into their respective use cases.
Sort elements
- JSON
- XML
- HTML
- Flat
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Transmit data in web applications
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Provide a standard method to access information
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Create web pages and web applications
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Import data in data warehousing projects
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Question 7 of 10
7. Question
A web developer is developing a new application using React.js for the front-end and Python for the backend. He wants to store data in JavaScript Object Notation (JSON) format in order to transmit the data between the web application and the server.
Which of the following formats represents a JSON file?
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Question 8 of 10
8. Question
A junior web developer is developing a new application where users can upload short videos. The first task is to create a homepage that shows the headline “Upload Your Short Videos” and a clickable button that says “upload now”.
Which of the following HTML commands would help the developer to complete the task successfully?
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Question 9 of 10
9. Question
Which of the following are common examples of structured data? (Choose TWO)
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Question 10 of 10
10. Question
Which of the following are common examples of unstructured data? (Choose TWO)
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