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Home » Quiz » Node.js Quiz

What is the primary purpose of using an index in a database?

Difficulty level
  • To speed up data retrieval
  • To enforce data constraints
  • To store large binary data
  • To define database structure
The primary purpose of using an index in a database is to speed up data retrieval. Indexes allow the database system to quickly locate and retrieve data, improving query performance.
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Node.js Quiz
Quiz
In a test for a method that processes data retrieved from a database, how would you use stubbing to simulate different scenarios and edge cases related to data retrieval?
How can over-reliance on mocking and stubbing affect the reliability of a test suite?

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