C-Store proposes Tuple Mover. This is to combine transaction processing and large-scale analytics into a single system. Which of the following sentences INCORRECTLY describes WS and RS?

Question

C-Store proposes Tuple Mover. This is to combine transaction processing and large-scale analytics into a single system. Which of the following sentences INCORRECTLY describes WS and RS?

BlackTom AI · Accepted Answer

We start by identifying what is given and what is missing in the prompt.
- The question asks which sentence INCORRECTLY describes WS (Writeable Store) and RS (Read-Optimized Store) in the C-Store architecture.
- The provided answer_options array is empty, and there is only a single answer string: "Columnar format is more desirable for WS for fast updates". This creates an inconsistency because the set of options typically drives the evaluation of correctness.

Option evaluation based on typical C-Store characteristics:
- Columnar format is generally more desirable for Read-Optimized Store (RS) or analytical workloads because columnar layouts enable efficient scanning, compression, and vectorized processing for reads.
- Row-oriented formats are typically favored for Writeable Store (WS) or transactional workloads because they store all attributes of a row contiguously, making updates and inserts of a single row more efficient.

Applying this to the given option:
- Option: "Columnar format is more desirable for WS for fast updates". This statement contradicts the common design principle of C-Store, which assigns columnar formats to RS (read-optimized/analytic) rather than WS (writeable/transactional) to optimize scans and analytics, and uses row-oriented storage for WS to support fast updates.
- Therefore, this option is incorrect because it asserts the opposite of the usual WS/RS storage design trade-off.

Since the options set is missing, we cannot analyze other possible statements or confirm which one is the sole incorrect option beyond this provided sentence. The key misconception in the given option is the misattribution of columnar storage to WS for fast updates, which would degrade write performance and is not aligned with C-Store’s separation of WS (row-based) and RS (column-based) designs.

In summary, the statement "Columnar format is more desirable for WS for fast updates" is false because columnar storage is typically advantageous for RS analytics, not for WS transactional workloads, where row-based storage is usually preferred for efficient updates.

cs_511_120258_251541 Lecture 2 - C-Store

C-Store proposes Tuple Mover. This is to combine transaction processing and large-scale analytics into a single system. Which of the following sentences INCORRECTLY describes WS and RS?

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