Term · Topic

Query Execution Plan (QEP)

Q: What is Query Execution Plan?

A Query Execution Plan (QEP) is a data structure that describes how a database management system will execute a submitted query, including the chosen access paths, join strategies, and operator ordering. Expanded Explanation 1. Technical Function and Core Characteristics A QEP specifies the sequence of physical operations that a database engine uses to access, join, filter, and aggregate data to answer a query. It encodes operator types, join algorithms, index usage, and estimated or actual row

Query execution plan is a data structure that describes how a database engine will execute a query, detailing chosen operators, join methods, and index usage. It matters because it underpins database performance tuning, resource usage control, and service-level reliability in enterprises.

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Vendors describe the same technology in different words. This record pins down what "QEP" means and ties it to the companies and coverage that use it, so an agent compares like with like.

One definition

A plain definition plus how it's used, what it's often confused with and why it matters.

Neighboring terms

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Get this term

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MCP

curl -X POST https://mcp.decisioninsights.ai/api/mcp-public \
  -H "content-type: application/json" \
  -H "accept: application/json, text/event-stream" \
  -d '{"id":1,"jsonrpc":"2.0","method":"tools/call","params":{"arguments":{"slug":"query-execution-plan-qep"},"name":"di_get_term"}}'

REST

GET https://api.decisioninsights.ai/api/public/v1/glossary/a569abcd-f26d-4ad3-a2ec-c0aba82423d0

CLI

di get-glossary --slug query-execution-plan-qep

JSON-LD

The schema.org markup this page publishes for search engines and AI agents, exactly as they read it.

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How an agent can rely on this definition

What the record lets an agent check before it uses the term in an answer.

The check	What the record shows	Where it is in the data
It's a known term	One entry, with its abbreviation and type (topic)	`name, alternateName`
It sits in a glossary	Linked to Query Optimization Engine, Query Optimizer, Secure Query Execution, Quantum Phase Estimation	`inDefinedTermSet`

View the raw record (JSON-LD)

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