Shards, RecordIDs, Main Storage, Delta Storage
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- Datasets of a table are organized in shards of roughly 60,000 items
- Inside a shard with n items, the datasets are numbered from 0..n-1
- The first few datasets of each shard are organized in a column store
- The rest of the datasets are organized in a row store
- The delta store consists of the insert list as well as the deletion mask