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.
