---
title: System Catalog Reference
slug: zgBRMmk5aiuJ_TUBqPe4-
description: Explore Ocient’s system catalog reference for metadata and schema management.
docTags: 
createdAt: Tue Aug 30 2022 18:50:52 GMT+0000 (Coordinated Universal Time)
updatedAt: Wed Apr 22 2026 21:15:06 GMT+0000 (Coordinated Universal Time)
---

The Ocient® System Catalog comprises a set of virtual tables and views. Together, these present administrators with metadata that describes the state of the data stored in the system, activity on the system, and the configuration of the system. The `information_schema` schema contains views that present information joined from multiple system catalog tables.

- [System Catalog](<./System Catalog Reference/System Catalog.md>)  — Listing and description of all system catalog tables included in the system. &#x20;
- [Information Schema](<./System Catalog Reference/Information Schema.md>)  — Listing and description of all `information_schema` schema views and `SHOW` commands defined by default.

To explore the system catalog tables, use sample queries for various topics as described in [Discover Insights From System Catalog Tables](<./System Catalog Reference/Discover Insights From System Catalog Tables.md>).

