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Listening Quiz: Thảo Luận Về Thiết Kế Lược Đồ Cơ Sở Dữ Liệu – Easy Level
Th11 16, 2024
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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 is the main topic of the conversation?
Choosing a database schema and related design features
Planning a marketing campaign for a new product
Fixing a problem with corrupted customer records
Comparing different programming languages for web development
Explanation:
The speakers discuss database schema design, including star versus snowflake schema, primary keys, and indexing.
2.
Why does Jessica prefer the snowflake schema at first?
It is easier to manage surrogate keys
It makes writes faster than indexes
It is simpler for reporting
It saves space with normalized data
Explanation:
Jessica says the snowflake schema saves space with normalized data.
3.
What does Daniel say is the main goal for their new database?
Achieving fast reporting
Saving as much storage space as possible
Making writes faster than reads
Avoiding the use of indexes
Explanation:
Daniel says, ‘our main goal is fast reporting.’
4.
What can be inferred from the conversation about the final schema choice?
The team has already decided not to use any primary keys
The team will likely choose a star schema because it supports their goal
The team will avoid indexing completely
The team will likely choose a snowflake schema because it uses less space
Explanation:
Daniel says the main goal is fast reporting, and Jessica agrees that the star schema sounds better for their needs.
5.
What concern does Daniel mention about adding more indexes?
They only work with star schemas
They make primary keys harder to manage
They improve read speed but slow down writes
They can reduce storage space too much
Explanation:
Daniel explains that indexes improve read speed but slow down writes.
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Luyện tập thêm về bài học này:
Listening Lesson
Vocabulary Flashcards and Quiz
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Trước đó:
Tiếng Anh An Ninh Mạng: Thảo Luận Về Các Chiến Thuật Kỹ Thuật Xã Hội – Easy Level
Tiếp theo:
Flashcards và Quiz Từ Vựng: Thảo Luận Giới Hạn NHS Và Các Lựa Chọn Thẩm Mỹ Tư Nhân – Advanced Level
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