| Overview | Module | Use | Devguide | Index |
| Constants | Constants' Details |
| constants group KeyType |
|
| Constants | |
| PRIMARY | indicates that the key is the primary key of a table. |
| UNIQUE | indicates that the key is unique, NULL values are allowed. |
| FOREIGN | indicates that the key is a foreign key of a table. |
| Constants' Details | |
PRIMARY
|
|
UNIQUE
|
|
FOREIGN
|
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