DBC is Sun Microsystem's JavaSoft application programming interface (API) standard for connecting to databases that support Structured Query Language (SQL). JDBC is patterned as a package of object-oriented objects that include Connect, ResultSet, and Statement. Each object contains various API methods, for example, Connect(), DisConnect(), and PrepareSQL().

The CONNX JDBC driver implements the JDBC specification developed for use within CONNX to enable connectivity to all types of databases. Used with the CONNX Data Dictionary (CDD), the JDBC driver provides a means of using many popular querying tools and application development tools. The CONNX JDBC driver works with JDBC-compliant software, which increases its flexibility when used by companies with a wide range of front-end applications and database types. The CONNX JDBC interface enables applications to access data in database management systems using the JavaSoft JDBC API to connect to the databases.

CONNX JDBC logging activity is turned on by default as some server functions are located in a file called CONNXJDBC.LOG. The file resides in C:\CONNX32\. It can be changed through the Windows registry settings. The CONNXJDBC.LOG file records client log-on, client log-off, and exception error messages on the server.