Deleting core data items

NSManagedObjectContext *MOC = [(Weekly_Situps_WorkoutAppDelegate*)[[UIApplication sharedApplication] delegate] managedObjectContext];
	NSFetchRequest * request = [[NSFetchRequest alloc] init];
	[request setEntity:[NSEntityDescription entityForName:@\"DaysEntity\" inManagedObjectContext:MOC]];
	[request setIncludesPropertyValues:YES]; //only fetch the managedObjectID
	
	NSError * error = nil;
	NSArray * array = [MOC executeFetchRequest:request error:&error];
	//error handling goes here
	for (NSManagedObject * obj in array) {
		[MOC deleteObject:obj];
	}
	[request setEntity:[NSEntityDescription entityForName:@\"ExerciseEntity\" inManagedObjectContext:MOC]];
	array = [MOC executeFetchRequest:request error:&error];
	for(NSManagedObject *obj in array)
		[MOC deleteObject:obj];
	[request release];
	[MOC save:nil];

	NSArray * array = [MOC executeFetchRequest:request error:&error];