데이터베이스 응용 프로그램을 만드는 작업 시퀀스
The following table shows your role and the framework's role in writing database applications.
참고
Visual C++ .NET에서는 포함된 DAO 클래스를 아직 사용할 수 있지만 Visual C++ 환경 및 마법사가 더 이상 DAO를 지원하지 않습니다.Microsoft recommends that you use ODBC for new MFC projects.DAO는 기존 응용 프로그램을 유지 관리하는 데만 사용할 수 있습니다.
Creating Database Applications
Task |
You do |
The framework does |
|---|---|---|
Decide whether to use the MFC ODBC or DAO classes. |
Use ODBC for new MFC projects. Use DAO only to maintain existing applications. See Should I use DAO or ODBC?. For general information, see the article Data Access Programming. |
The framework supplies classes that support database access. |
Create your skeleton application with database options. |
Run the MFC Application Wizard. Select options on the Database Support page. If you choose an option that creates a record view, also specify:
|
The MFC Application Wizard creates files and specifies the necessary includes. Depending on the options you specify, the files can include a recordset class. |
Design your database form or forms. |
Use the Visual C++ dialog editor to place controls on the dialog template resources for your record view classes. |
The MFC Application Wizard creates an empty dialog template resource for you to fill in. |
Create additional record view and recordset classes as needed. |
Use Class View to create the classes and the dialog editor to design the views. |
Class View creates additional files for your new classes. |
Create recordset objects as needed in your code. Use each recordset to manipulate records... |
Your recordsets are based on the classes derived from CRecordset with the wizards. |
ODBC uses record field exchange (RFX) to exchange data between the database and your recordset's field data members. If you are using a record view, dialog data exchange (DDX) exchanges data between the recordset and the controls on the record view. |
...or create an explicit CDatabase in your code for each database you want to open. |
Base your recordset objects on the database objects. |
The database object provides an interface to the data source. |
Bind data columns to your recordset dynamically. |
In ODBC, add code to your derived recordset class to manage the binding. See the article Recordset: Dynamically Binding Data Columns (ODBC). |
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