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Expression index

Within computing and computer science, an expression index, also known as a function based index, is a database index that is built on a generic expression, rather than one or more columns. This allows indexes to be defined for common query conditions that depend on data in a table, but are not actually stored in that table.

Science, Database support & Overview

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Explore the main themes, entities and connections around Expression index. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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Database support

IBM Db2Oracle DatabasePostgreSQL
3 related topics

Overview

ComputingComputer scienceDatabaseIndexColumns
6 related topics

Topics to explore

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Overview

Database support

Advanced semantic analysis

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Map overview Semantic statistics

Expression index

Nodes12
Edges11
Triples4
Avg. degree1.83
Density0.166667
Components1

How this topic connects Entity context

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Expression index

Top relations

related to Database support · 4
Expression index → IBM Db2, Major, Oracle Database, PostgreSQL

Important terminology Word statistics

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Important terminology

index expression database support case-insensitive common use make name lower last indexes computing columns within computer science also known function

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Expression indexrelated to Database supportMajor0.60section
Expression indexrelated to Database supportIBM Db20.60section
Expression indexrelated to Database supportOracle Database0.60section
Expression indexrelated to Database supportPostgreSQL0.60section

Related concept clusters Concept neighborhoods

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    Connections between topic areas Semantic bridges

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    Min side: 3
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