| Column Name | Type | Length | Nullable | Contents |
|---|---|---|---|---|
| REFERENCEID | CHAR | 36 | false | Identifier for table (join with SYSTABLES.TABLEID) |
| COLUMNNAME | CHAR | 128 | false | column or parameter name |
| COLUMNNUMBER | INT | 4 | false | the position of the column within the table |
| COLUMNDATATYPE | org.apache.derby.catalog. TypeDescriptor This class is not part of the public API. |
false | system type that describes precision, length, scale, nullability, type name, and storage type of data | |
| COLUMNDEFAULT | java.io.Serializable | true | for tables, describes default value of the column. The toString() method on the object stored in the table returns the text of the default value as specified in the CREATE TABLE or ALTER TABLE statement. | |
| COLUMNDEFAULTID | CHAR | 36 | true | unique identifier for the default value |
| AUTOINCREMENT COLUMNVALUE | BIGINT | true | what the next value for column will be, if the column is an identity column | |
| AUTOINCREMENT COLUMNSTART | BIGINT | true | initial value of column (if specified), if it is an identity column | |
| AUTOINCREMENT COLUMNINC | BIGINT | true | amount column value is automatically incremented (if specified), if the column is an identity column |