Clean init

db/schema.sql

@@ -0,0 +1,12 @@
+CREATE TABLE IF NOT EXISTS events (
+    id SERIAL PRIMARY KEY,
+    changeover_id VARCHAR(100),
+    changeover_date DATE,
+    start_time TIME,
+    end_time TIME,
+    duration_seconds INTEGER,
+    camera_zone VARCHAR(50),
+    event_description TEXT,
+    state VARCHAR(50),
+    state_duration_seconds INTEGER
+);