diff --git a/google/cloud/bigquery/storage/v1alpha2/BUILD.bazel b/google/cloud/bigquery/storage/v1alpha2/BUILD.bazel
index 4555b527..2789b99e 100644
--- a/google/cloud/bigquery/storage/v1alpha2/BUILD.bazel
+++ b/google/cloud/bigquery/storage/v1alpha2/BUILD.bazel
@@ -22,6 +22,7 @@ proto_library(
         "//google/api:client_proto",
         "//google/api:field_behavior_proto",
         "//google/rpc:status_proto",
+        "//google/api:resource_proto",
         "@com_google_protobuf//:descriptor_proto",
         "@com_google_protobuf//:empty_proto",
         "@com_google_protobuf//:timestamp_proto",
@@ -163,6 +164,7 @@ moved_proto_library(
         "//google/api:client_proto",
         "//google/api:field_behavior_proto",
         "//google/rpc:status_proto",
+        "//google/api:resource_proto",
         "@com_google_protobuf//:descriptor_proto",
         "@com_google_protobuf//:empty_proto",
         "@com_google_protobuf//:timestamp_proto",
diff --git a/google/cloud/bigquery/storage/v1alpha2/bigquerystorage_gapic.legacy.yaml b/google/cloud/bigquery/storage/v1alpha2/bigquerystorage_gapic.legacy.yaml
new file mode 100644
index 00000000..39cd0a76
--- /dev/null
+++ b/google/cloud/bigquery/storage/v1alpha2/bigquerystorage_gapic.legacy.yaml
@@ -0,0 +1,18 @@
+type: com.google.api.codegen.ConfigProto
+config_schema_version: 1.0.0
+# The settings of generated code in a specific language.
+language_settings:
+  java:
+    package_name: com.google.cloud.bigquery.storage.v1alpha2
+  python:
+    package_name: google.cloud.bigquery.storage_v1alpha2.gapic
+  go:
+    package_name: cloud.google.com/go/bigquery/storage/apiv1alpha2
+  csharp:
+    package_name: Google.Cloud.Bigquery.Storage.V1alpha2
+  ruby:
+    package_name: Google::Cloud::Bigquery::Storage::V1alpha2
+  php:
+    package_name: Google\Cloud\Bigquery\Storage\V1alpha2
+  nodejs:
+    package_name: storage.v1alpha2
diff --git a/google/cloud/bigquery/storage/v1alpha2/bigquerystorage_gapic.yaml b/google/cloud/bigquery/storage/v1alpha2/bigquerystorage_gapic.yaml
index 39cd0a76..60b62f11 100644
--- a/google/cloud/bigquery/storage/v1alpha2/bigquerystorage_gapic.yaml
+++ b/google/cloud/bigquery/storage/v1alpha2/bigquerystorage_gapic.yaml
@@ -1,5 +1,5 @@
 type: com.google.api.codegen.ConfigProto
-config_schema_version: 1.0.0
+config_schema_version: 2.0.0
 # The settings of generated code in a specific language.
 language_settings:
   java:
diff --git a/google/cloud/bigquery/storage/v1alpha2/protobuf.proto b/google/cloud/bigquery/storage/v1alpha2/protobuf.proto
index 4f58b0d9..882adf5b 100644
--- a/google/cloud/bigquery/storage/v1alpha2/protobuf.proto
+++ b/google/cloud/bigquery/storage/v1alpha2/protobuf.proto
@@ -1,4 +1,4 @@
-// Copyright 2019 Google LLC.
+// Copyright 2020 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,6 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-//
 
 syntax = "proto3";
 
@@ -25,9 +24,8 @@ option java_package = "com.google.cloud.bigquery.storage.v1alpha2";
 
 // Protobuf schema is an API presentation the proto buffer schema.
 message ProtoSchema {
-  // Message descriptor for the data. The descriptor has to be self contained
-  // to include all the nested type definition, excepted for proto buffer well
-  // known types
+  // Descriptor for input message. The descriptor has to be self contained,
+  // including all the nested types, excepted for proto buffer well known types
   // (https://developers.google.com/protocol-buffers/docs/reference/google.protobuf)
   // and zetasql public protos
   // (https://github.com/google/zetasql/tree/master/zetasql/public/proto).
diff --git a/google/cloud/bigquery/storage/v1alpha2/storage.proto b/google/cloud/bigquery/storage/v1alpha2/storage.proto
index e9330637..fd13ba3a 100644
--- a/google/cloud/bigquery/storage/v1alpha2/storage.proto
+++ b/google/cloud/bigquery/storage/v1alpha2/storage.proto
@@ -1,4 +1,4 @@
-// Copyright 2019 Google LLC.
+// Copyright 2020 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,6 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-//
 
 syntax = "proto3";
 
@@ -20,8 +19,10 @@ package google.cloud.bigquery.storage.v1alpha2;
 import "google/api/annotations.proto";
 import "google/api/client.proto";
 import "google/api/field_behavior.proto";
+import "google/api/resource.proto";
 import "google/cloud/bigquery/storage/v1alpha2/protobuf.proto";
 import "google/cloud/bigquery/storage/v1alpha2/stream.proto";
+import "google/cloud/bigquery/storage/v1alpha2/table.proto";
 import "google/protobuf/empty.proto";
 import "google/protobuf/timestamp.proto";
 import "google/protobuf/wrappers.proto";
@@ -33,8 +34,13 @@ option java_package = "com.google.cloud.bigquery.storage.v1alpha2";
 // Request message for `CreateWriteStream`.
 message CreateWriteStreamRequest {
   // Required. Reference to the table to which the stream belongs, in the format
-  // of `projects/{project_id}/datasets/{dataset_id}/tables/{table_id}`.
-  string parent = 1 [(google.api.field_behavior) = REQUIRED];
+  // of `projects/{project}/datasets/{dataset}/tables/{table}`.
+  string parent = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "bigquerystorage.googleapis.com/Table"
+    }
+  ];
 
   // Required. Stream to be created.
   WriteStream write_stream = 2 [(google.api.field_behavior) = REQUIRED];
@@ -53,7 +59,12 @@ message AppendRowsRequest {
   // Required. The stream that is the target of the append operation. This value must be
   // specified for the initial request. If subsequent requests specify the
   // stream name, it must equal to the value provided in the first request.
-  string write_stream = 1 [(google.api.field_behavior) = REQUIRED];
+  string write_stream = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "bigquerystorage.googleapis.com/WriteStream"
+    }
+  ];
 
   // Optional. If present, the write is only performed if the next append offset is same
   // as the provided value. If not present, the write is performed at the
@@ -84,15 +95,25 @@ message AppendRowsResponse {
 // Request message for `GetWriteStreamRequest`.
 message GetWriteStreamRequest {
   // Required. Name of the stream to get, in the form of
-  // `projects/{project_id}/datasets/{dataset_id}/tables/{table_id}/streams/{stream_id}`.
-  string name = 1 [(google.api.field_behavior) = REQUIRED];
+  // `projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}`.
+  string name = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "bigquerystorage.googleapis.com/WriteStream"
+    }
+  ];
 }
 
 // Request message for `BatchCommitWriteStreams`.
 message BatchCommitWriteStreamsRequest {
   // Required. Parent table that all the streams should belong to, in the form of
-  // `projects/{project_id}/datasets/{dataset_id}/tables/{table_id}`.
-  string parent = 1 [(google.api.field_behavior) = REQUIRED];
+  // `projects/{project}/datasets/{dataset}/tables/{table}`.
+  string parent = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "bigquerystorage.googleapis.com/Table"
+    }
+  ];
 
   // Required. The group of streams that will be committed atomically.
   repeated string write_streams = 2 [(google.api.field_behavior) = REQUIRED];
@@ -107,8 +128,13 @@ message BatchCommitWriteStreamsResponse {
 // Request message for invoking `FinalizeWriteStream`.
 message FinalizeWriteStreamRequest {
   // Required. Name of the stream to finalize, in the form of
-  // `projects/{project_id}/datasets/{dataset_id}/tables/{table_id}/streams/{stream_id}`.
-  string name = 1 [(google.api.field_behavior) = REQUIRED];
+  // `projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}`.
+  string name = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "bigquerystorage.googleapis.com/WriteStream"
+    }
+  ];
 }
 
 // Response message for `FinalizeWriteStream`.
@@ -131,8 +157,9 @@ service BigQueryWrite {
   rpc CreateWriteStream(CreateWriteStreamRequest) returns (WriteStream) {
     option (google.api.http) = {
       post: "/v1alpha2/{parent=projects/*/datasets/*/tables/*}"
-      body: "*"
+      body: "write_stream"
     };
+    option (google.api.method_signature) = "parent,write_stream";
   }
 
   // Appends data to the given stream.
@@ -159,6 +186,7 @@ service BigQueryWrite {
       post: "/v1alpha2/{write_stream=projects/*/datasets/*/tables/*/streams/*}"
       body: "*"
     };
+    option (google.api.method_signature) = "write_stream";
   }
 
   // Gets a write stream.
@@ -167,6 +195,7 @@ service BigQueryWrite {
       post: "/v1alpha2/{name=projects/*/datasets/*/tables/*/streams/*}"
       body: "*"
     };
+    option (google.api.method_signature) = "name";
   }
 
   // Finalize a write stream so that no new data can be appended to the
@@ -176,6 +205,7 @@ service BigQueryWrite {
       post: "/v1alpha2/{name=projects/*/datasets/*/tables/*/streams/*}"
       body: "*"
     };
+    option (google.api.method_signature) = "name";
   }
 
   // Atomically commits a group of `PENDING` streams that belong to the same
@@ -187,5 +217,7 @@ service BigQueryWrite {
     option (google.api.http) = {
       get: "/v1alpha2/{parent=projects/*/datasets/*/tables/*}"
     };
+    option (google.api.method_signature) = "parent";
   }
+
 }
diff --git a/google/cloud/bigquery/storage/v1alpha2/stream.proto b/google/cloud/bigquery/storage/v1alpha2/stream.proto
index a50822d1..0ec0ef81 100644
--- a/google/cloud/bigquery/storage/v1alpha2/stream.proto
+++ b/google/cloud/bigquery/storage/v1alpha2/stream.proto
@@ -1,4 +1,4 @@
-// Copyright 2019 Google LLC.
+// Copyright 2020 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,21 +11,30 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-//
 
 syntax = "proto3";
 
 package google.cloud.bigquery.storage.v1alpha2;
 
 import "google/api/field_behavior.proto";
+import "google/api/resource.proto";
 import "google/cloud/bigquery/storage/v1alpha2/table.proto";
 import "google/protobuf/timestamp.proto";
 
 option go_package = "google.golang.org/genproto/googleapis/cloud/bigquery/storage/v1alpha2;storage";
 option java_package = "com.google.cloud.bigquery.storage.v1alpha2";
+option (google.api.resource_definition) = {
+  type: "bigquerystorage.googleapis.com/Table"
+  pattern: "projects/{project}/datasets/{dataset}/tables/{table}"
+};
 
 // Information about a single stream that gets data inside the storage system.
 message WriteStream {
+  option (google.api.resource) = {
+    type: "bigquerystorage.googleapis.com/WriteStream"
+    pattern: "projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}"
+  };
+
   enum Type {
     // Unknown type.
     TYPE_UNSPECIFIED = 0;
@@ -36,10 +45,13 @@ message WriteStream {
 
     // Data is invisible until the stream is committed.
     PENDING = 2;
+
+    // Data is only visible up to the offset to which it was flushed.
+    BUFFERED = 3;
   }
 
   // Output only. Name of the stream, in the form
-  // `projects/{project_id}/datasets/{dataset_id}/tables/{table_id}/streams/{stream_id}`.
+  // `projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}`.
   string name = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   Type type = 2 [(google.api.field_behavior) = IMMUTABLE];
diff --git a/google/cloud/bigquery/storage/v1alpha2/table.proto b/google/cloud/bigquery/storage/v1alpha2/table.proto
index fb1dc4aa..d4bc0171 100644
--- a/google/cloud/bigquery/storage/v1alpha2/table.proto
+++ b/google/cloud/bigquery/storage/v1alpha2/table.proto
@@ -1,4 +1,4 @@
-// Copyright 2019 Google LLC.
+// Copyright 2020 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,6 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-//
 
 syntax = "proto3";