Merge pull request #99524 from rachel-msft/edits1220

Update concepts-extensions.md

Author: PRMerger16

articles/postgresql/concepts-extensions.md

@@ -5,7 +5,7 @@ author: rachel-msft
 ms.author: raagyema
 ms.service: postgresql
 ms.topic: conceptual
-ms.date: 12/03/2019
+ms.date: 12/20/2019
 ---
 # PostgreSQL extensions in Azure Database for PostgreSQL - Single Server
 PostgreSQL provides the ability to extend the functionality of your database using extensions. Extensions bundle multiple related SQL objects together in a single package that can be loaded or removed from your database with a single command. After being loaded in the database, extensions function like built-in features.
@@ -247,6 +247,26 @@ CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;
 
 You can now create a TimescaleDB hypertable [from scratch](https://docs.timescale.com/getting-started/creating-hypertables) or migrate [existing time-series data in PostgreSQL](https://docs.timescale.com/getting-started/migrating-data).
 
+### Restoring a Timescale database
+To restore a Timescale database using pg_dump and pg_restore, you need to run two helper procedures in the destination database: `timescaledb_pre_restore()` and `timescaledb_post restore()`.
+
+First prepare the destination database:
+
+```SQL
+--create the new database where you'll perform the restore
+CREATE DATABASE tutorial;
+\c tutorial --connect to the database 
+CREATE EXTENSION timescaledb;
+
+SELECT timescaledb_pre_restore();
+```
+
+Now you can run pg_dump on the original database and then do pg_restore. After the restore, be sure to run the following command in the restored database:
+
+```SQL
+SELECT timescaledb_post_restore();
+```
+
 
 ## Next steps
 If you don't see an extension that you'd like to use, let us know. Vote for existing requests or create new feedback requests in our [feedback forum](https://feedback.azure.com/forums/597976-azure-database-for-postgresql).