What Is the Difference between Indexing by Reference and Indexing by Content?
Example: When scanned documents include useful metadata such as title, subject, description, date etc., you can index them by reference so that they can appear in search results for queries matching the metadata content.
When CES indexes a document by content, it records the file information and indexes the text content of the file.
Note: CES converters support several document types (see Supported File Formats). You can index other document types using open converters (see Adding an Open Converter) or using IFilters (see What Are IFilters?).