diff --git a/app/consumer/initdb/01_schema.sql b/app/consumer/initdb/01_schema.sql
index 364f1d2..a813e28 100644
--- a/app/consumer/initdb/01_schema.sql
+++ b/app/consumer/initdb/01_schema.sql
@@ -1,13 +1,13 @@
 CREATE TABLE IF NOT EXISTS "device" (
 	"device_id" UUID NOT NULL DEFAULT uuidv4(),
-	"device_eui" VARCHAR(255) NOT NULL,
+	"device_eui" VARCHAR(255) NOT NULL UNIQUE,
 	"site_id" UUID,
 	PRIMARY KEY("device_id")
 );
 
 CREATE TABLE IF NOT EXISTS "site" (
 	"site_id" UUID NOT NULL DEFAULT uuidv4(),
-	"pce" VARCHAR(255) NOT NULL,
+	"pce" VARCHAR(255) NOT NULL UNIQUE,
 	"address_1" VARCHAR(255) NOT NULL,
 	"address_2" VARCHAR(255),
 	"postal_code" VARCHAR(255) NOT NULL,
@@ -19,7 +19,7 @@ CREATE TABLE IF NOT EXISTS "user" (
 	"user_id" UUID NOT NULL DEFAULT uuidv4(),
 	"name" VARCHAR(255) NOT NULL,
 	"first_name" VARCHAR(255) NOT NULL,
-	"email" VARCHAR(255) NOT NULL,
+	"email" VARCHAR(255) NOT NULL UNIQUE,
 	"password_hash" VARCHAR(255),
 	"user_type_id" UUID NOT NULL,
 	PRIMARY KEY("user_id")