phpmyadmin mysql foreign key -

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phpmyadmin संस्करण: 4.1.14

डीबी इंजन: InnoDB

अनुक्रमणिका पहले से ही सेट: <पूर्व> वैकल्पिक तालिका `tbl_name` जोड़ें इंडेक्स (` user_id`);

मेरी क्वेरी: 

  वैकल्पिक तालिका 'tbl_name` विदेशी कुंजी जोड़ें (`user_id`) संदर्भ & lt; db_name & gt;`। `` `` `` आईडी`) अद्यतन प्रतिबंध पर DELETE प्रतिबंध;   
 लेकिन आईएम को अभी भी त्रुटि मिलती है:  
  # 1215 - इंडेक्स एक्सप्लोरर के लिए असंभव डिज़ॉल्टर डिज़ाईन   
 MySQL प्रलेखन में यह त्रुटि:  
  एरर: 1215 SQLSTATE: HY000 (ER_CANNOT_ADD_FOREIGN)   
 क्या गलत है और मुझे इसका समाधान करने के लिए क्या करना चाहिए? शायद मैं phpmyadmin सेटिंग्स में कुछ भूल गया? यहां छवि विवरण दर्ज करें  
  यहां छवि विवरण दर्ज करें   
  छवि दर्ज करें यहाँ विवरण   
  यहां छवि विवरण दर्ज करें    < P> 
 
 समस्या हल हो गई है, im इंडेक्सेड कॉलम में यूएनएसएनएम् जोड़ (user_id के लिए)  
  `user_id` INT UNSIGNED NOT NULL ,   
 मुझे लगता है, संबंधों वाले क्षेत्र में एक ही गुण होना चाहिए

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