Foreign key constraints in Android using SQLite? on Delete cascade.
- by LordSnoutimus
I have two tables: tracks and waypoints, a track can have many waypoints, but a waypoint is assigned to only 1 track.
In the way points table I have a column called "trackidfk" which inserts the track_ID once a track is made, however I have not setup Foreign Key constraints on this column.
When I delete a track I want to delete the assigned waypoints, is this possible?. I read about using Triggers but I don't think they are supported in Android.
To create the waypoints table:
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + TABLE_NAME + " (" + _ID
+ " INTEGER PRIMARY KEY AUTOINCREMENT, " + LONGITUDE
+ " INTEGER," + LATITUDE + " INTEGER," + TIME
+ " INTEGER,"+ TRACK_ID_FK + " INTEGER );");