refactor to add ingest batchs for better traceability

service_a/server/database/migrations/001_data.up.sql

@@ -1,16 +1,32 @@
 create extension citext; -- noqa
 
+create table public.ingest_batch
+(
+    id serial primary key,
+
+    elapsed_ms int not null default 0,
+    file_checksum text not null,
+
+    created_at timestamp not null default now()
+);
+
+create index idx_ingest_batch_file_checksum on public.ingest_batch (
+    file_checksum
+);
+
 create table public.meteo_data
 (
     id serial primary key,
+    batch_id int not null references public.ingest_batch (id),
 
     location_name citext not null,
-    max_temp numeric(5,2) not null,
-    min_temp numeric(5,2) not null,
-    rainfall numeric(5,2) not null,
+    date_of_register date not null,
+    max_temp numeric(5, 2) not null,
+    min_temp numeric(5, 2) not null,
+    rainfall numeric(5, 2) not null,
     cloudiness int not null,
 
-    created_at date not null default now()
+    created_at timestamp not null default now()
 );
 
 create index idx_meteo_data_location_name on public.meteo_data (location_name);
@@ -18,6 +34,8 @@ create index idx_meteo_data_location_name on public.meteo_data (location_name);
 create table public.rejected_data
 (
     id serial primary key,
+    batch_id int not null references public.ingest_batch (id),
+
     raw_data text not null,
     reason text default null,