| QSql | Contains miscellaneous identifiers used throughout the Qt SQL library |
| QSqlDatabase | Represents a connection to a database |
| QSqlDriver | Abstract base class for accessing specific SQL databases |
| QSqlDriverCreator | Template class that provides a SQL driver factory for a specific driver type |
| QSqlDriverCreatorBase | The base class for SQL driver factories |
| QSqlError | SQL 數據庫錯誤信息 |
| QSqlField | 操縱 SQL 數據庫錶和視圖中的字段 |
| QSqlIndex | Functions to manipulate and describe database indexes |
| QSqlQuery | 執行和操縱 SQL 語句的手段 |
| QSqlQueryModel | Read-only data model for SQL result sets |
| QSqlRecord | 封裝數據庫記錄 |
| QSqlRelationalTableModel | Editable data model for a single database table, with foreign key support |
| QSqlResult | Abstract interface for accessing data from specific SQL databases |
| QSqlTableModel | Editable data model for a single database table |
