| Oracle8i Application Developer's Guide - XML Release 3 (8.1.7) Part Number A86030-01  | 
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Using Internet File System (iFS) to Build XML Applications, 6 of 11
If parsing non-XML documents, such as .doc or .xls documents, or if you have defined a custom type, such as .vcf for Vcards, you must write a custom parser to create database objects from these documents. To create a custom parser, you can either subclass an existing iFS parser or create a custom class from scratch, implementing the oracle.ifs.beans.parsers.Parser interface. 
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