---
title: "Object Catalog Views (Transact-SQL)"
description: Object Catalog Views (Transact-SQL)
author: rwestMSFT
ms.author: randolphwest
ms.date: 07/07/2025
ms.service: sql
ms.subservice: system-objects
ms.topic: "reference"
helpviewer_keywords:
  - "object catalog views [SQL Server]"
  - "catalog views [SQL Server], objects"
dev_langs:
  - "TSQL"
---
# Object catalog views (Transact-SQL)

[!INCLUDE [sqlserver](../../includes/applies-to-version/sqlserver.md)]

This section contains links to the following catalog views.

- [sys.allocation_units](sys-allocation-units-transact-sql.md)
- [sys.assembly_modules](sys-assembly-modules-transact-sql.md)
- [sys.check_constraints](sys-check-constraints-transact-sql.md)
- [sys.columns](sys-columns-transact-sql.md)
- [sys.computed_columns](sys-computed-columns-transact-sql.md)
- [sys.default_constraints](sys-default-constraints-transact-sql.md)
- [sys.event_notifications](sys-event-notifications-transact-sql.md)
- [sys.events](sys-events-transact-sql.md)
- [sys.extended_procedures](sys-extended-procedures-transact-sql.md)
- [sys.foreign_key_columns](sys-foreign-key-columns-transact-sql.md)
- [sys.foreign_keys](sys-foreign-keys-transact-sql.md)
- [sys.function_order_columns](sys-function-order-columns-transact-sql.md)
- [sys.hash_indexes](sys-hash-indexes-transact-sql.md)
- [sys.identity_columns](sys-identity-columns-transact-sql.md)
- [sys.index_columns](sys-index-columns-transact-sql.md)
- [sys.key_constraints](sys-key-constraints-transact-sql.md)
- [sys.masked_columns](sys-masked-columns-transact-sql.md)
- [sys.memory_optimized_tables_internal_attributes](sys-memory-optimized-tables-internal-attributes-transact-sql.md)
- [sys.numbered_procedure_parameters](sys-numbered-procedure-parameters-transact-sql.md)
- [sys.numbered_procedures](sys-numbered-procedures-transact-sql.md)
- [sys.objects](sys-objects-transact-sql.md)
- [sys.parameters](sys-parameters-transact-sql.md)
- [sys.partitions](sys-partitions-transact-sql.md)
- [sys.periods](sys-periods-transact-sql.md)
- [sys.procedures](sys-procedures-transact-sql.md)
- [sys.sequences](sys-sequences-transact-sql.md)
- [sys.service_queues](sys-service-queues-transact-sql.md)
- [sys.sql_dependencies](sys-sql-dependencies-transact-sql.md)
- [sys.sql_expression_dependencies](sys-sql-expression-dependencies-transact-sql.md)
- [sys.sql_modules](sys-sql-modules-transact-sql.md)
- [sys.stats_columns](sys-stats-columns-transact-sql.md)
- [sys.stats](sys-stats-transact-sql.md)
- [sys.synonyms](sys-synonyms-transact-sql.md)
- [sys.table_types](sys-table-types-transact-sql.md)
- [sys.tables](sys-tables-transact-sql.md)
- [sys.trigger_event_types](sys-trigger-event-types-transact-sql.md)
- [sys.trigger_events](sys-trigger-events-transact-sql.md)
- [sys.triggers](sys-triggers-transact-sql.md)
- [sys.views](sys-views-transact-sql.md)

## Related content

- [System catalog views (Transact-SQL)](catalog-views-transact-sql.md)
- [Transact-SQL reference (Database Engine)](../../t-sql/language-reference.md)