Search view is used to display the advanced search form(s) (not search results, which are handled by Results view). This view is not strictly necessary for all digital collections - you could write your own search interface, or use Custom Queries and Results (CQR) - but is provided anyway due to the complexity of the forms.
As you may already know, CONTENTdm® provides four different search forms on its Advanced Search page, allowing the user to search "across all fields;" "selected fields;" "by proximity;" or "by date." dmBridge merges the first two of these forms together, offering a total of three different search forms, which can be added to the advanced search template (search/index.html.php) using the
dateSearch() methods of the