1 files changed, 24 insertions, 0 deletions
diff --git a/data/sql/proj_db_table_defs.sql b/data/sql/proj_db_table_defs.sql
index c63637cf..d403f0eb 100644
--- a/data/sql/proj_db_table_defs.sql
+++ b/data/sql/proj_db_table_defs.sql
@@ -946,6 +946,30 @@ FOR EACH ROW BEGIN
 END;
 
 
+CREATE TABLE deprecation(
+    table_name TEXT NOT NULL CHECK (table_name IN (
+        'unit_of_measure', 'celestial_body', 'ellipsoid',
+        'area', 'prime_meridian', 'geodetic_datum', 'vertical_datum', 'geodetic_crs',
+        'projected_crs', 'vertical_crs', 'compound_crs', 'conversion', 'grid_transformation',
+        'helmert_transformation', 'other_transformation', 'concatenated_operation')),
+    deprecated_auth_name TEXT NOT NULL,
+    deprecated_code TEXT NOT NULL,
+    replacement_auth_name TEXT NOT NULL,
+    replacement_code TEXT NOT NULL,
+    source TEXT
+);
+
+CREATE TRIGGER deprecation_insert_trigger
+BEFORE INSERT ON deprecation
+FOR EACH ROW BEGIN
+    SELECT RAISE(ABORT, 'insert on deprecation violates constraint: deprecated entry refers to unexisting code')
+        WHERE NOT EXISTS (SELECT 1 FROM object_view o WHERE o.table_name = NEW.table_name AND o.auth_name = NEW.deprecated_auth_name AND o.code = NEW.deprecated_code);
+
+    SELECT RAISE(ABORT, 'insert on deprecation violates constraint: replacement entry refers to unexisting code')
+        WHERE NOT EXISTS (SELECT 1 FROM object_view o WHERE o.table_name = NEW.table_name AND o.auth_name = NEW.replacement_auth_name AND o.code = NEW.replacement_code);
+END;
+
+
 
 CREATE VIEW coordinate_operation_view AS
     SELECT 'grid_transformation' AS table_name, auth_name, code, name,