zhoujinsong commented on code in PR #48:
URL: https://github.com/apache/amoro-site/pull/48#discussion_r1923039793


##########
amoro-docs/content/admin-guides/deployment.md:
##########
@@ -99,38 +98,25 @@ Make sure the port is not used before configuring it.
 
 ### Configure system database
 
-You can use MySQL/PostgreSQL as the system database instead of the default 
Derby.
+Amoro used `Derby` as the backend storage default, so you can use `Derby` 
directly without any additional configuration. 

Review Comment:
   ```suggestion
   Ams uses embedded [Apache Derby](https://db.apache.org/derby/) as the 
backend storage by default, so you can use `Derby` directly without any 
additional configuration. 
   ```



##########
amoro-docs/content/admin-guides/deployment-on-kubernetes.md:
##########
@@ -157,16 +157,16 @@ ingress:
 ### Configure the database.
 
 AMS default is to use Derby database for storage. When the pod is destroyed, 
the data will also disappear.
-In production environments, we recommend using MySQL as the storage for system 
data.
+In production environments, we recommend using a RDBMS as the storage for 
system data, you can ref to [Database 
Configuration](/deployment/#configure-system-database) for more detail.

Review Comment:
   As far as I know, Derby can also be deployed independently to improve its 
availability.
   
   So we may change the content here like:
   ```
   AMS uses embedded [Apache Derby](https://db.apache.org/derby/) as its 
backend storage by default.
   In production environments, we recommend using an RDBMS(Relational Database 
Management System) with higher availability guarantees as the storage for 
system data, you can refer to [Database 
Configuration](/deployment/#configure-system-database) for more details.
   ```



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