Transactions  ODBC client API processing

Chapter 5: Managing Transactions

Request processing flow

Request processing consists of the following steps:

  1. The client application issues a request (for example, a select statement).

  2. The client Application Program Interface (API) receives the request and sends it to the access service.

  3. The DirectConnect access service receives the request, transforms it as specified in its configuration, and executes it.

  4. After the request processes, the access service converts target datatypes to Open Server datatypes and returns the results to the client application.

  5. The client application disconnects from the access service.

The following figure shows the processing flow from the client application through the DirectConnect access service to the database.

Figure 5-1: Request processing flow

For more information about Open Client and Open Server products, see the Open Client Client-Library/C Reference Manual and the Open Server Server-Library/C Reference Manual.





Copyright © 2005. Sybase Inc. All rights reserved. ODBC client API processing

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