Is it possible to extract small portion of data from entire database? if possible then how to do it.I want data to be extracted which is bound to my map view only so that other data objects will not come in new file,only objects related to bounded data will come.pls help

Is it possible to extract a small portion of data from an entire database? If possible then how can I do it. I want data to be extracted which is within my map view only, so that other data objects are excluded: only objects contained in the map view should be in the extract.