服务数据对象（SDO）是一种以统一的方式访问异构数据的技术。2004年，服务数据对象的技术规范最初由BEA和IBM合作开发，并通过了Java社区过程的批准。规范的第二版作为服务组件体系结构的关键部分在2005年11月份推出。

服务数据对象规范现在由下面公司开发：

现在有以下的SDO产品

以下是服务数据对象的开源实现

Service Data Objects is a technology that allows heterogeneous data to be accessed in a uniform way. The SDO specification was originally developed in 2004 as a joint collaboration between Oracle (BEA) and IBM and approved by the Java Community Process in JSR 235. Version 2.0 of the specification was introduced in November 2005 as key part of the Service Component Architecture.