WebDatabases are (mainly) optimized for data that is too large to fit in memory. How data is stored on secondary storage is crucial for understanding: how data is accessed to respond to queries and modify data. how indices can help speed up queries and the various performance trade-offs in using indices in mixed workflows. WebApr 2, 2024 · Data Structure. log-structured storage engine vs page-oriented storage engine (B-trees) for an append-only log, an update will just append to the end of the file so we need to look at the last occurrence for the latest data; append-only log is very efficient for writes, but read will perform terribly – O(n), we need one or more index. Index is like additional …
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