SQLite insert overwriting data

I am developing application which receive the incoming notifications and save them in database. I have a problem that whenever a new message received it overwrite all the tuples in the database for example I received 13 messages my database will contain 13 tuples but all have the same value of the last received on. This is my code of inserting note that I tried two methods of inserting one is commented and the other is not and the two gave the same problem. Regards

public void addDBMessage(de.ecspride.reactor.poc.model.Message message) {
    //  datasource = new DBDataSource(null);

//        Log.i("MessageStore", "Message added called the database");
//        List<String> patterns = findPat();

//        for (int i = 0; i < patterns.size(); i++) {
//
//            String pattern = patterns.get(i);
//            Log.i("MessageStore", pattern);
//            if ((message.toString()).matches(pattern)) {

    ContentValues values = new ContentValues();
    values.put("APP", message.app);
    values.put("TIME", message.time);
    values.put("SENDER", message.sender);
    values.put("MESSAGE", message.message);
        // Inserting Row
    open(); // opening database connection

        database.insert("DATA", null, values);
    close(); // Closing database connection
        Log.i("MessageStore", "Message added sucessfully to the database");


//        try {
//            String ADD = "INSERT INTO DATA VALUES ('" + message.app.toString() + "','" +         message.time.toString()
//                    + "','" + message.sender.toString() + "','" + message.message.toString() +   "')";
//            database.execSQL(ADD);
//            Log.i("MessageStore", "Message added sucessfully to the database");
//
////            }
////        }
//        } catch (Exception e) {
//            Toast.makeText(null, "ERROR " + e.toString(), Toast.LENGTH_LONG).show();
//
//        }
 }

My database creation String is

        public static final String TABLE_CREATE =
            "CREATE TABLE " + TABLE_DATA + " (" +
                    "APP TEXT, TIME TEXT, SENDER TEXT, MESSAGE TEXT )";