---
layout: article
title: MPE_DATADICTIONARY
description: The MPE_DATADICTIONARY table documents libraries, tables, columns and directories with descriptions, ownership and sensitivity information.
---

# MPE_DATADICTIONARY

The `MPE_DATADICTIONARY` table stores user-maintained documentation for libraries, tables, columns and directories. This content is surfaced in the Data Dictionary view of Data Controller.

## Columns

 - `TX_FROM num`: SCD2 open datetime
 - 🔑 `DD_TYPE char(16)`: The type of item being documented (e.g. LIBRARY, TABLE, COLUMN, DIRECTORY)
 - 🔑 `DD_SOURCE char(1024)`: The item being documented (e.g. `libref`, `libref.table`, `libref.table.column` or a directory path)
 - `DD_SHORTDESC char(256)`: Short description
 - `DD_LONGDESC char(32767)`: Long description (Markdown supported)
 - `DD_OWNER char(128)`: Owner of the item
 - `DD_RESPONSIBLE char(128)`: Responsible party for the item
 - `DD_SENSITIVITY char(64)`: Sensitivity classification (e.g. Low)
 - 🔑 `TX_TO num`: SCD2 close datetime