Grid computing is becoming more and more popular nowadays， but it does not mean that it is becoming easy to use，deploy and program．OGSA-DAI is a middleware capable of exposing and managing databases on the grid． In this work we present an extension to the OGSA-DAI grid middleware，this extension is an implementation of the Sun JDBC interface，used to access databases within the java language．This implementation uses the OGSA-DAI client API．With this work we aim to provide an easy and well known way to enable new and existing developers，and applications to use databases exposed in the grid using the OGSA-DAI middleware．