| QSql | 包含用于整个 Qt SQL 模块的杂项标识符 |
| QSqlDatabase | 处理数据库连接 |
| 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 数据库错误信息 |
| QSqlField | 操纵 SQL 数据库表和视图中的字段 |
| QSqlIndex | Functions to manipulate and describe database indexes |
| QSqlQuery | 执行和操纵 SQL 语句的手段 |
| QSqlQueryModel | Read-only data model for SQL result sets |
| QSqlRecord | 封装数据库记录 |
| 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 |
