diff -r 21274e5950af -r a1f4cb076d2f doc/development/postgresql_vfs.sql
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/development/postgresql_vfs.sql	Sat Sep 24 16:26:10 2022 +0200
@@ -0,0 +1,35 @@
+create table Resource (
+    resource_id       serial    primary key,
+    parent_id         int       references Resource(resource_id),
+    nodename          text      not null,
+    iscollection      boolean   not null default false,
+	
+    lastmodified      timestamp not null default current_date,
+    creationdate      timestamp not null default current_date,
+    contentlength     bigint    not null default 0,
+	
+	etag              uuid,
+
+    resoid            oid,
+    
+    unique(parent_id, nodename)
+);
+
+create table Property (
+	property_id       serial   primary key,
+	resource_id       int      references Resource(resource_id) on delete cascade,
+	prefix            text     not null,
+	xmlns             text     not null,
+	pname             text     not null,
+	lang              text,
+	nsdeflist         text,
+	pvalue            text,
+	
+	unique(resource_id, xmlns, pname)       
+);
+
+create type property_name as (
+ xmlns     text,
+ name      text
+);
+