These classes provide access to SQL databases.
| QSql | The QSql namespace contains miscellaneous identifiers used throughout the Qt SQL library. |
| QSqlDatabase | The QSqlDatabase class represents a connection to a database. |
| QSqlDriver | The QSqlDriver class is an abstract base class for accessing specific SQL databases. |
| QSqlDriverCreator | The QSqlDriverCreator class is a template class that provides a SQL driver factory for a specific driver type. |
| QSqlDriverCreatorBase | The QSqlDriverCreatorBase class is the base class for SQL driver factories. |
| QSqlError | The QSqlError class provides SQL database error information. |
| QSqlField | The QSqlField class manipulates the fields in SQL database tables and views. |
| QSqlIndex | The QSqlIndex class provides functions to manipulate and describe database indexes. |
| QSqlQuery | The QSqlQuery class provides a means of executing and manipulating SQL statements. |
| QSqlQueryModel | The QSqlQueryModel class provides a read-only data model for SQL result sets. |
| QSqlRecord | The QSqlRecord class encapsulates a database record. |
| QSqlRelationalTableModel | The QSqlRelationalTableModel class provides an editable data model for a single database table, with foreign key support. |
| QSqlResult | The QSqlResult class provides an abstract interface for accessing data from specific SQL databases. |
| QSqlTableModel | The QSqlTableModel class provides an editable data model for a single database table. |