It would help if your question was a little more specific. What are you attempting to do? Off the top of my head, two generic uses for a delimited file are:
1. Bulk import of data to an excel spreadsheet. This is useful for data manipulation or creating an excel report using delimited data.
2. Bulk import of data to a relational database (RDBMS) table. This can be a RDBMS such as SQL Server or Oracle.