database requirements

README.md

@@ -7,11 +7,22 @@
 5. App should be able to notify users by email;
 6. App configuration should be done via a YAML file;
 7. If watcher is configured for both v4 and v6, it should spawn two processes;
-8. 
 
 ### User Requirements
 
 1. User can choose ways to be notified if a change happens;
 2. User can define the delta between checks;
 3. User can specify a script to run if the address has, or not changed;
 4. User can choose to check IPv6, IPv4 or both ips.
+
+### Database
+
+1. Database should store data relative to each time the address has changed.
+2. Database records should contain:
+  - Datetime of change (unix time)
+  - Previous address (string)
+  - New address (string)
+  - Address version (v4 | v6, string)
+  - Source of change (ipify, myip, etc., string)
+  - Id (uint)
+3. Database should use sqlite3