diff --git a/script/sql/create/32.region.sql b/script/sql/create/32.region.sql
index b4ec745..9b59a10 100644
--- a/script/sql/create/32.region.sql
+++ b/script/sql/create/32.region.sql
@@ -1,6 +1,9 @@
+create type region_type as enum ('NONE', 'DMA', 'SA', 'VD', 'WDA');
+
 create table region
 (
   id text primary key
+, r_type region_type not null default 'NONE'
 , boundary geometry not null unique
 );
 
diff --git a/script/sql/create/33.dma.sql b/script/sql/create/33.dma.sql
new file mode 100644
index 0000000..85df39a
--- /dev/null
+++ b/script/sql/create/33.dma.sql
@@ -0,0 +1,5 @@
+create table region_dma
+(
+  id text primary key references region(id)
+, parent text references region_dma(id)
+);
diff --git a/script/sql/create/34.sa.sql b/script/sql/create/34.sa.sql
new file mode 100644
index 0000000..5e9a4dc
--- /dev/null
+++ b/script/sql/create/34.sa.sql
@@ -0,0 +1,6 @@
+create table region_sa
+(
+  id text primary key references region(id)
+, source varchar(32) not null -- references _node(id)
+, time_index integer not null
+);
diff --git a/script/sql/create/35.vd.sql b/script/sql/create/35.vd.sql
new file mode 100644
index 0000000..7878151
--- /dev/null
+++ b/script/sql/create/35.vd.sql
@@ -0,0 +1,5 @@
+create table region_vd
+(
+  id text primary key references region(id)
+, source varchar(32) not null -- references _node(id)
+);
diff --git a/script/sql/create/36.wda.sql b/script/sql/create/36.wda.sql
new file mode 100644
index 0000000..6492d1a
--- /dev/null
+++ b/script/sql/create/36.wda.sql
@@ -0,0 +1,5 @@
+create table region_wda
+(
+  id text primary key references region(id)
+, demand float8 not null default 0.0
+);
diff --git a/script/sql/drop/32.region.sql b/script/sql/drop/32.region.sql
index 693aa07..9b38883 100644
--- a/script/sql/drop/32.region.sql
+++ b/script/sql/drop/32.region.sql
@@ -11,3 +11,5 @@ drop table if exists temp_region;
 drop index if exists region_gist;
 
 drop table if exists region;
+
+drop type if exists region_type;
diff --git a/script/sql/drop/33.dma.sql b/script/sql/drop/33.dma.sql
new file mode 100644
index 0000000..04469bb
--- /dev/null
+++ b/script/sql/drop/33.dma.sql
@@ -0,0 +1 @@
+drop table if exists region_dma;
diff --git a/script/sql/drop/34.sa.sql b/script/sql/drop/34.sa.sql
new file mode 100644
index 0000000..ab8d9a7
--- /dev/null
+++ b/script/sql/drop/34.sa.sql
@@ -0,0 +1 @@
+drop table if exists region_sa;
diff --git a/script/sql/drop/35.vd.sql b/script/sql/drop/35.vd.sql
new file mode 100644
index 0000000..bc87202
--- /dev/null
+++ b/script/sql/drop/35.vd.sql
@@ -0,0 +1 @@
+drop table if exists region_vd;
diff --git a/script/sql/drop/36.wda.sql b/script/sql/drop/36.wda.sql
new file mode 100644
index 0000000..119650d
--- /dev/null
+++ b/script/sql/drop/36.wda.sql
@@ -0,0 +1 @@
+drop table if exists region_wda;