Appendix B. C Mobile Application Development
"DBTask" Example Applications
A few examples are found under the Examples/DBTask folder where C++Builder is installed. These are identified and briefly described in Table A.9.
Table A.9. DBTasks Example Applications
| Folder | Description |
|---|---|
| BkQuery | Demonstrates how to perform a background query on an SQL database using threads. |
| CachedUp | This example demonstrates how cached updates can be used in conjunction with live data using the BDE and nonlive data using the UpdateSQL component. Requires Interbase Server. |
| Contacts | An example app demonstrating how customer orders are managed using TQuery , TTable , and TDataSource . (See Figure A.7 for an illustration of this example.) Figure A.7. The Contacts database application. |
| CSDemos | An example Internet Client application. Requires Interbase Server and SQL Links. |
| CtrlGrid | A simple app, which displays database fields in a grid using TDBGrid , TDBCtrlGrid , TDBNavigator , and TDBEdit . |
| DBErrors | An example that demonstrates how to use Data Modules to centralize coding. Includes a one-to-many form and illustrates how to trap and control database errors. |
| Filter | An application that demonstrates how to filter records using a Data Module with a Query linked through a Datasource. Uses TDBGrid and TDBNavigator . |
| Find | Demonstrates how to find records in a database. Uses TDBNavigator , TDataSource , and TDBGrid . |
| FishFact | An example application that accesses a database of fish facts. Uses TDBImage , TDataSource , TDBGrid , and TDBText . (See Figure A.8 for an illustration of this example.) Figure A.8. The FishFact database application. |
| Gds | The Global Dive Supply example that shows two views of data and filter capabilities. Uses TDataModule , TDataSet , and TDBGrid . |
| GDSDemo | Another Global Dive Supply example that uses TTable , TDatabase , TDataSource , TDBNavigator , and much more. A bit more sophisticated than Gds. |
| IBDemo | An application that demonstrates how to use InterBase event alerts. |
| LookUp | Demonstrates how to use lookup fields and calculated fields using TDBNavigator , TDBGrid , TdataSource , and TCurrencyField . |
| MastApp | A very sophisticated database example that uses QuickReports with multiple data. Uses TTable , TDataSource , TQuery , TDataBase , TQuickReport , and more. |
| MstPool | Demonstrates how to pool database objects and measure the amount of time needed to open and close a database connection. |
| NavMDI | An MDI database example that uses TDBNavigator , TDataSource , TDBGrid , and more. |
| NavSDI | A multiform SDI database example that uses TDBNavigator , TDataSource , TDBGrid , and more. |
| NDXBuild | Shows how to build indexes for database tables using TTable , and more. |
| QBFDemo | Demonstrates how to enable users to define their own queries. Uses TDBGrid , TDBNavigator , and TDataSource . |
| QJoin | Demonstrates how to join two tables by using an SQL query. Uses TQuery , TDataSource , and TDBGrid . |
| QuickRpt | Demonstrates how to use QuickReport types for viewing and printing. Uses TQuickRep , TQRGroup , TQRExpr , TQRDetailLink , and much more. (See Figure A.9 for an illustration of this example.) Figure A.9. The QuickRpt print preview. |
| TextData | Demonstrates how to create and use a DataSet component to work with text files. Uses TDataSet . |
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