diff --git a/superset/charts/schemas.py b/superset/charts/schemas.py
index 65261d7af98de..9ad56269d3915 100644
--- a/superset/charts/schemas.py
+++ b/superset/charts/schemas.py
@@ -210,6 +210,8 @@ class ChartPostSchema(Schema):
     certification_details = fields.String(
         description=certification_details_description, allow_none=True
     )
+    is_managed_externally = fields.Boolean(allow_none=True, default=False)
+    external_url = fields.String(allow_none=True)
 
 
 class ChartPutSchema(Schema):
@@ -251,6 +253,8 @@ class ChartPutSchema(Schema):
     certification_details = fields.String(
         description=certification_details_description, allow_none=True
     )
+    is_managed_externally = fields.Boolean(allow_none=True, default=False)
+    external_url = fields.String(allow_none=True)
 
 
 class ChartGetDatasourceObjectDataResponseSchema(Schema):
diff --git a/superset/dashboards/schemas.py b/superset/dashboards/schemas.py
index 661c61e1c2483..71f9bc41261e6 100644
--- a/superset/dashboards/schemas.py
+++ b/superset/dashboards/schemas.py
@@ -249,6 +249,8 @@ class DashboardPostSchema(BaseDashboardSchema):
     certification_details = fields.String(
         description=certification_details_description, allow_none=True
     )
+    is_managed_externally = fields.Boolean(allow_none=True, default=False)
+    external_url = fields.String(allow_none=True)
 
 
 class DashboardPutSchema(BaseDashboardSchema):
@@ -278,6 +280,8 @@ class DashboardPutSchema(BaseDashboardSchema):
     certification_details = fields.String(
         description=certification_details_description, allow_none=True
     )
+    is_managed_externally = fields.Boolean(allow_none=True, default=False)
+    external_url = fields.String(allow_none=True)
 
 
 class ChartFavStarResponseResult(Schema):
diff --git a/superset/databases/schemas.py b/superset/databases/schemas.py
index 4483b051f1be0..ee9b4a62d2694 100644
--- a/superset/databases/schemas.py
+++ b/superset/databases/schemas.py
@@ -386,6 +386,8 @@ class Meta:  # pylint: disable=too-few-public-methods
         description=sqlalchemy_uri_description,
         validate=[Length(1, 1024), sqlalchemy_uri_validator],
     )
+    is_managed_externally = fields.Boolean(allow_none=True, default=False)
+    external_url = fields.String(allow_none=True)
 
 
 class DatabasePutSchema(Schema, DatabaseParametersSchemaMixin):
@@ -428,6 +430,8 @@ class Meta:  # pylint: disable=too-few-public-methods
         description=sqlalchemy_uri_description,
         validate=[Length(0, 1024), sqlalchemy_uri_validator],
     )
+    is_managed_externally = fields.Boolean(allow_none=True, default=False)
+    external_url = fields.String(allow_none=True)
 
 
 class DatabaseTestConnectionSchema(Schema, DatabaseParametersSchemaMixin):
diff --git a/superset/datasets/schemas.py b/superset/datasets/schemas.py
index 775798d274fa7..d85ce6c8cc753 100644
--- a/superset/datasets/schemas.py
+++ b/superset/datasets/schemas.py
@@ -80,6 +80,8 @@ class DatasetPostSchema(Schema):
     schema = fields.String(validate=Length(0, 250))
     table_name = fields.String(required=True, allow_none=False, validate=Length(1, 250))
     owners = fields.List(fields.Integer())
+    is_managed_externally = fields.Boolean(allow_none=True, default=False)
+    external_url = fields.String(allow_none=True)
 
 
 class DatasetPutSchema(Schema):
@@ -100,6 +102,8 @@ class DatasetPutSchema(Schema):
     columns = fields.List(fields.Nested(DatasetColumnsPutSchema))
     metrics = fields.List(fields.Nested(DatasetMetricsPutSchema))
     extra = fields.String(allow_none=True)
+    is_managed_externally = fields.Boolean(allow_none=True, default=False)
+    external_url = fields.String(allow_none=True)
 
 
 class DatasetRelatedChart(Schema):