Thanks for getting back to me.

I have read the documentation.

The following from the documentation is applicable to the workspace I created.
1, A workspace catalog, which, when originally provisioned, is named after your workspace.
2, Your workspace gets the workspace catalog only if the workspace creator provided an appropriate IAM role and storage location during workspace 3, Automatic enablement of Unity.
3, Automatic enablement of Unity Catalog
　 An automatically-provisioned Unity Catalog metastore (unless a Unity Catalog metastore already exists for the workspace region and the metastore is enabled for automatic workspace assignment).

So after the workspace is created, the AWS root storage will have a unity-catalog folder as shown in the capture.
(I think the third thing you answered also corresponds to this capture)

There are a couple of points I don't understand.
1,Metastore manages metadata, not catalog information, schema information, table information, function information, access control information, etc.
In the current state, the metastore configuration is not done, so I can't see it? Can we see it without setting it in the metastore configuration from the account console?

2, When setting up in metastore configuration from the account console, will these information be stored in the target S3 bucket location?