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src/tracking/tracking.dto.ts

-import { Game_PersonEntity } from '../game/game.entity';
 import { Allow, ValidateNested } from 'class-validator';
 import { GeoDTO } from './geo.dto';
 import { Type } from 'class-transformer';

src/tracking/tracking.entity.ts

@@ -9,6 +9,7 @@ export class TrackingEntity {
   @Column({ type: 'json', nullable: true }) data: GeoDTO[];
   @Column('text') icon: string;
 
+  // when the GamePerson is deleted it's tracking data is also deleted
   @ManyToOne(type => Game_PersonEntity, person => person.gamepersonId, {
     onDelete: 'CASCADE',
   })

src/tracking/tracking.module.ts

@@ -7,6 +7,10 @@ import { TrackingEntity } from './tracking.entity';
 import { Game_PersonEntity } from '../game/game.entity';
 import { PersonEntity } from '../user/user.entity';
 
+/////////////////////////////////////////////////////////////////////
+/// Tracking                                                      ///
+/// - contains everything to do with Tracking data.               ///
+/////////////////////////////////////////////////////////////////////
 @Module({
   imports: [
     TypeOrmModule.forFeature([TrackingEntity, Game_PersonEntity, PersonEntity]),