diff --git a/docs/design.mdx b/docs/design.mdx
index 34b85e49..f137ba14 100644
--- a/docs/design.mdx
+++ b/docs/design.mdx
@@ -44,6 +44,8 @@ ScalarDB manages various types of metadata in the underlying databases to provid
 | Cluster   | `scalardb.users`, `scalardb.namespace_privileges`, `scalardb.table_privileges`, `scalardb.auth_tokens` | For [authentication and authorization](./scalardb-cluster/scalardb-auth-with-sql.mdx) | In one designated database specified to store the scalardb system namespace |
 | Cluster   | `scalardb.encrypted_columns`                                                                           | For [encryption at rest](./scalardb-cluster/encrypt-data-at-rest.mdx)                 | In one designated database specified to store the scalardb system namespace |
 | Cluster   | `scalardb.abac_*`                                                                                      | For [attribute-based access control](./scalardb-cluster/authorize-with-abac.mdx)      | In one designated database specified to store the scalardb system namespace |
+| Cluster   | Remote replication-managed tables (`transaction_groups`)                                               | For buffering write operations from the primary site in the [remote replication](./scalardb-cluster/remote-replication.mdx)                      | In the replication database                                                 |
+| Cluster   | Remote replication-managed tables (suffixed with `__records`)                                          | For managing the replication states of the backup site database tables in the [remote replication](./scalardb-cluster/remote-replication.mdx)    | In the backup site database                                                 |
 | Analytics | All the tables managed by the catalog server                                                           | For [data catalog](./scalardb-analytics/design.mdx#universal-data-catalog)            | In the catalog server database                                              |
 
 :::note