Define file extent

In order to read data from an input file rather than from the database, a file extent can be defined.

The file extent clause requires an operand list after the FILE EXTENT keyword. The requirements for the operand list are more specific in this case. The operand list may contain up to four specification parameters.

File extents may refer to different file formats as OIF, XML and ESDF (CSV). All file formats support attributes, complex attributes and references.