一：先建议两张表

1. Person,Score 分别代表，学生表，分数表
2. 在 Person的Relationships里面建立关系，指向分数score
3. 
4. 

二：coreData生成的两个表：

     Person

    

@class Score;@interface Person : NSManagedObject@property (nonatomic, retain) NSString * address;@property (nonatomic, retain) NSNumber * age;@property (nonatomic, retain) NSString * name;@property (nonatomic, retain) Score *score;@end

　　Score

@interface Score : NSManagedObject@property (nonatomic, retain) NSNumber * dotNet;@property (nonatomic, retain) NSNumber * java;@property (nonatomic, retain) NSNumber * php;@end

三：添加记录查询记录代码

- (void)addTheRowData{    Person *person = [NSEntityDescription insertNewObjectForEntityForName:@"Person" inManagedObjectContext:self.appDelegate.managedObjectContext];    person.name = @"李四";    person.age = [NSNumber numberWithInt:20];    person.address = @"中国济南";        Score *score = [NSEntityDescription insertNewObjectForEntityForName:@"Score" inManagedObjectContext:self.appDelegate.managedObjectContext];    score.dotNet = [NSNumber numberWithFloat:70.77];    score.php = [NSNumber numberWithFloat:80.88];    score.java = [NSNumber numberWithFloat:90.99];        person.score = score;    //score.person = person;            [self.appDelegate saveContext];    }- (void)showTheTableData{    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc]initWithEntityName:@"Person"];    NSError *error;    NSArray *fetchedObjects = [self.appDelegate.managedObjectContext executeFetchRequest:fetchRequest error:&error];    for (Person *info in fetchedObjects) {        //Score *score = info.score;        NSLog(@"name:%@ age:%@ address:%@ --- dotNet:%@ java:%@ php:%@", info.name,info.age,info.address,info.score.dotNet,info.score.java,info.score.php);    }        }