Which data item is explicitly kept in the matching_dimension table for distance calculations?

Which data item is explicitly kept in the matching_dimension table for distance calculations?

• A. A separate distance table
• B. matching_dimension table
• C. distance_cache
• D. distance_log

Answer: (B)

Distance calculations rely on the actual dimension values that define how items relate to each other (for example, a location’s coordinates or other attributes used to measure proximity). These dimension values are stored in the matching_dimension table, making it the place where the data used to compute distance is explicitly kept. Other options—such as a separate distance table for precomputed distances, a cache for previously calculated values, or a log of calculations—serve different purposes (storing results or logs) and do not hold the raw dimension data needed for the distance computation itself.

Distance calculations rely on the actual dimension values that define how items relate to each other (for example, a location’s coordinates or other attributes used to measure proximity). These dimension values are stored in the matching_dimension table, making it the place where the data used to compute distance is explicitly kept. Other options—such as a separate distance table for precomputed distances, a cache for previously calculated values, or a log of calculations—serve different purposes (storing results or logs) and do not hold the raw dimension data needed for the distance computation itself.