DA0-002 · Question #35
Which of the following data repositories stores unformatted data in its original, raw form?
The correct answer is D. Data lake. A data lake is a repository that allows you to store a massive amount of raw, unstructured, semi-structured, and structured data in its native format. It's designed to hold data as-is without requiring upfront schema definitions.
Question
Which of the following data repositories stores unformatted data in its original, raw form?
Options
- AData warehouse
- BData silo
- CData mart
- DData lake
How the community answered
(48 responses)- A2% (1)
- B8% (4)
- C4% (2)
- D85% (41)
Why each option
A data lake is a repository that allows you to store a massive amount of raw, unstructured, semi-structured, and structured data in its native format. It's designed to hold data as-is without requiring upfront schema definitions.
A data warehouse stores highly structured, processed, and often aggregated data from various sources for analytical reporting, not raw unformatted data.
A data silo is an isolated data repository that is not integrated with other systems, and while it might contain various data, its defining characteristic isn't about storing raw, unformatted data for broad analysis.
A data mart is a subset of a data warehouse, designed for a specific department or business function, and thus also stores structured and processed data.
A data lake stores data in its original, raw, and unformatted state, regardless of its structure (structured, semi-structured, or unstructured). This approach provides maximum flexibility for future analysis, allowing schema-on-read, where data is prepared for a specific analytical task at the time of use.
Concept tested: Data repository types - data lake
Source: https://learn.microsoft.com/en-us/azure/architecture/data-guide/big-data/data-lake-overview
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