diff --git a/src/org/hwo/pulscounter/db/schema/schema-full.sql b/src/org/hwo/pulscounter/db/schema/schema-full.sql
deleted file mode 100644
index d57fc96..0000000
--- a/src/org/hwo/pulscounter/db/schema/schema-full.sql
+++ /dev/null
@@ -1,13 +0,0 @@
-/* 
-	synololog sql database schema
-	
-	Version: 0 
-
-*/
-
-create table props (id uuid primary key,name varchar(255) unique,value varchar(255));
-create table devices (id uuid,serial varchar(12));
-create table snapshots (id uuid,device integer,snap_id integer,timestamp integer,counters integer array[32],analogs integer array[8],inputs integer,outputs integer,pullups integer,inverts integer,field0 integer); 
-
-insert into props (id,name,value) values(uuid(),'db.schema.version','0');
-
diff --git a/src/org/hwo/pulscounter/db/schema/schema.sql b/src/org/hwo/pulscounter/db/schema/schema.sql
new file mode 100644
index 0000000..4feb99e
--- /dev/null
+++ b/src/org/hwo/pulscounter/db/schema/schema.sql
@@ -0,0 +1,12 @@
+// 
+//	synololog sql database schema
+//	
+//	Version: 0 
+//
+//
+create table if not exists props (id uuid primary key,name varchar(255) unique,value varchar(255));
+create table if not exists devices (id uuid,serial varchar(12));
+create table if not exists snapshots (id uuid,device integer,snap_id integer,timestamp integer,counters integer array[32],analogs integer array[8],inputs integer,outputs integer,pullups integer,inverts integer,field0 integer); 
+
+insert into props (id,name,value) values(uuid(),'db.schema.version','0');
+