Data Systems
multi-dimensional index
query several ranges at once (R-tree)
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Storage ExtrasData SystemsMore terms from this board
- concatenated indexseveral fields glued into one key (prefix queries only)
- data cubeprecomputed aggregate grid
- edit distance# of edits between two strings (fuzzy match)
- fact/dimension tableevent row / its descriptors
- full-text indexsearch by words
- Lucenethe search library behind Elasticsearch/Solr
- materialized viewcached-on-disk query result
- projectiona copy of column data in a specific sort order
- R-treegeospatial index structure
- star vs snowflake schemaflat dimensions vs normalized dimensions