What is data partitioning in a cloud data warehouse?
Source: docs.cloud.google.comintermediate
Tests physical data layout and cost/performance tradeoffs. Strong answers define time-based or integer-range partitioning, explain partition pruning avoids full scans, and warn against high-cardinality keys.
Tests your grasp of physical data layout and the cost/performance tradeoffs in columnar warehouses. A strong answer defines time-based or integer-range partitioning, explains how partition pruning eliminates full scans by restricting query execution to relevant shards, notes that poor keys cause metadata overhead and smaller files, and distinguishes partitioning from clustering.
Read the original → docs.cloud.google.com
- #data-warehousing
- #bigquery
- #partitioning
- #query-optimization
- #cost-optimization
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