What is the relationship between SDO & WDO?
Web Data Objects, or WDO, is the name of an early release of SDO shipped in IBM WebSphere Application Server 5.1 and IBM WebSphere Studio Application Developer 5.1.2. If you’ve spent any time with WebSphere Studio 5.1.2, you should already be somewhat familiar with SDO, although you’re probably accustomed to seeing it denoted as WDO, for example in library names. WDO is now called SDO.