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Listening Quiz: Rà Soát Các Thay Đổi Trong Mô Hình Dữ Liệu – Medium Level
Th9 20, 2025
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bởi
Anna Phạm
trong
Tiếng Anh dành cho Nhà khoa học dữ liệu (English for Data Scientist)
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1.
What are Mia and James mainly discussing?
A new employee schedule for the team
Recent changes to a data model
A problem with duplicate feedback forms
Ways to improve customer service responses
Explanation:
They discuss several updates Mia made to a data model, including a new table, data type changes, indexes, and constraints.
2.
What key does the new customer feedback table use to link to the existing customer table?
The feedback date
The search index
The customer ID
A duplicate entry number
Explanation:
Mia says the new table uses the customer ID as a key.
3.
What change did Mia make to the date field?
She changed it to a datetime format
She removed it from the table
She linked it to the customer ID
She made it a text field
Explanation:
Mia states that she changed the date field to a datetime format.
4.
Why does James say, “That will help with time-based queries”?
He believes the customer table will be deleted soon
He is concerned the new table has too many rows
He thinks the datetime format makes it easier to search by time
He wants Mia to remove the date field
Explanation:
James is responding to Mia’s change from date to datetime, which would make time-based queries easier.
5.
What does Mia say she added to avoid duplicate entries?
Indexes
Time-based queries
A new customer table
Constraints
Explanation:
Mia says she added constraints to avoid duplicate entries.
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