collectionindexes
Collectionindexes refer to data structures and mechanisms used to improve access to elements within a collection by providing fast lookup, ordering, and range queries. They function by maintaining a separate data structure that maps keys or attributes to positions or references in the primary collection. They are common in databases for tables and document stores, as well as in in-memory collections in programming languages.
Common index types include hash indexes for exact-match lookups; tree-based indexes such as B-tree and B+-tree
Construction and maintenance involve creating an index on a collection, either by building it from existing
Scope and examples vary by system. In relational databases, indexes speed up SELECT queries with WHERE clauses
See also: indexing, database index, B-tree, hash table, data structure.