Conditions form the part of a search, through a view or filter, that controls which results are returned in a view. A condition is analogous to a true-or-false question.
If the answer to the question is true, the result is included in the view. If the result is false, the result does not appear in the view. Conditions are applied one at a time to each result to determine whether the result appears.
When you create conditions at the view level, the condition applies to the view as well as all public and private filters associated with the view. When you create conditions at the filter level, the conditions of the filter and the view apply to the search results. For related views, you can only create conditions at the view level.