When should we use descriptive programming in UFT?

UFT identifies objects through either object repository or descriptive programming. These are the following scenarios in which descriptive programming can be used:

a) Used to remove duplicate objects. In different screens or windows of the application the same objects exist. If OR is used in this case you have to store the same object under different object hierarchy in OR. Descriptive programming is used to deal with these situations.

b) To store objects in OR(Object repository) is not appropriate in certain situations. For example, if you want to print 1000 links on the page, you should not store all the links in the object repository, you should instead use descriptive programming.