SOPView+: an object browser which supports navigating database by changing base object

We present the design and implementation of SOPView+, an object browser that supports navigation of a large database by changing the base object. The base object is an object which is a basis for navigation; forward navigation is provided for the reference paths ahead of the base object and backward navigation for the ones behind it. SOPView+ allows users to change the base object along the reference hierarchy among a number of database objects; this makes it possible for them to explore a large database until they find objects of their interest on the limited screen space, solving the screen real estate problem. SOPView+ also supports extended synchronized browsing, which synchronizes displaying objects along both forward and backward navigational paths