To ensure successful JDBC integration, which aspect should be confirmed?

To ensure successful JDBC integration, it is essential to confirm the source credentials and endpoint accessibility. This involves verifying that the credentials being used to connect to the database are valid and have the appropriate permissions for accessing the required data. Additionally, endpoint accessibility checks ensure that the application can reach the database server over the network, which involves confirming settings such as the database URL, port numbers, and firewall rules.

Without valid credentials or proper endpoint access, the integration will fail regardless of other factors. Database performance metrics, while important for optimization, do not directly affect the successful establishment of the connection. Outdated drivers can lead to compatibility issues and may not work with the current version of the database but are not as fundamental as the necessity of having correct credentials and connectivity. Similarly, monitoring for zero error reports in previous months is useful for assessing stability but does not guarantee successful integration if the current connection parameters are incorrect. Therefore, focusing on source credentials and endpoint accessibility is crucial for establishing a reliable JDBC integration.