Member Function Documentation
QSqlRelation::QSqlRelation ()
Constructs an invalid QSqlRelation object.
For such an object, the tableName(), indexColumn(), and displayColumn() functions return an empty string.
See also isValid().
QSqlRelation::QSqlRelation ( const QString & tableName, const QString & indexColumn, const QString & displayColumn )
Constructs a QSqlRelation object, where tableName is the SQL table name to which a foreign key refers, indexColumn is the foreign key, and displayColumn is the field that should be presented to the user.
See also tableName(), indexColumn(), and displayColumn().
QString QSqlRelation::displayColumn () const
Returns the column from table tableName() that should be presented to the user instead of a foreign key.
QString QSqlRelation::indexColumn () const
Returns the index column from table tableName() to which a foreign key refers.
bool QSqlRelation::isValid () const
Returns true if the QSqlRelation object is valid; otherwise returns false.
QString QSqlRelation::tableName () const
Returns the name of the table to which a foreign key refers.