Developing data access applications
You can use data access applications to manipulate data
from outside sources for use within your application serving environment.
Changing the error detection model to use the Exception Checking Model
The error detection model has been expanded and the data
source has a configuration option that you can use to select the exception
mapping model or the exception checking model for error detection.
This configuration option allows the Error Detection Model to comply
with Java Database Connectivity (JDBC) 4.0.
Exceptions pertaining to data access
All enterprise bean container-managed persistence (CMP)
beans under the Enterprise JavaBeans (EJB)
2.x specification receive a standard EJB exception when an operation
fails. Java Database Connectivity
(JDBC) applications receive a standard SQL exception if any JDBC operation
fails. The product provides special exceptions for its relational
resource adapter (RRA), to indicate that the connection currently
held is no longer valid.
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