---
title: Primary and Secondary Index Reference
description: Primary Indexes and Global Secondary Indexes (GSI) support queries
  made by the Query Service.
pubDate: 2026-08-17T09:53:44.266Z
antora:
  editUrl: https://github.com/couchbaselabs/docs-devex/edit/release/7.6/modules/learn/pages/services-and-indexes/indexes/global-secondary-indexes.adoc
  xref: xref:7.6@server:learn:services-and-indexes/indexes/global-secondary-indexes.adoc[]
---

[Consult the llms.txt file for a full list of contents](/llms.txt)
[View original HTML](/server/7.6/learn/services-and-indexes/indexes/global-secondary-indexes.html)

# Primary and Secondary Index Reference

> Primary Indexes and Global Secondary Indexes (GSI) support queries made by the Query Service. 

## Tuning and Query Performance

* [Query without Indexes](query-without-index.md)
* [Index Lifecycle](index-lifecycle.md)
* [Types of Primary and Secondary Index](indexing-and-query-perf.md)
* [Covering Indexes](../../../n1ql/n1ql-language-reference/covering-indexes.md)
* [Index Scans](index-scans.md)
* [Index Pushdowns](index%5Fpushdowns.md)
* [Grouping and Aggregate Pushdowns](../../../n1ql/n1ql-language-reference/groupby-aggregate-performance.md)
* [Early Filters, Order, and Pagination](early-filters-and-pagination.md)

## Index Commands

* [ADVISE](../../../n1ql/n1ql-language-reference/advise.md)
* [CREATE INDEX](../../../n1ql/n1ql-language-reference/createindex.md)
* [CREATE PRIMARY INDEX](../../../n1ql/n1ql-language-reference/createprimaryindex.md)
* [BUILD INDEX](../../../n1ql/n1ql-language-reference/build-index.md)
* [ALTER INDEX](../../../n1ql/n1ql-language-reference/alterindex.md)
* [DROP INDEX](../../../n1ql/n1ql-language-reference/dropindex.md)
* [DROP PRIMARY INDEX](../../../n1ql/n1ql-language-reference/dropprimaryindex.md)

## Storage and Availability

* [Index Availability and Performance](index-replication.md)
* [Index Storage Settings](storage-modes.md)

## Related Links

* [All Couchbase Server Indexes](indexes.md)
* [Index Service Architecture](../services/index-service.md)
* [Manage Indexes](../../../manage/manage-indexes/manage-indexes.md)
* [Monitor Indexes](../../../manage/monitor/monitoring-indexes.md)