DFDL

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{{FormatInfo
 
{{FormatInfo
 
|formattype=electronic
 
|formattype=electronic
|subcat=Metadata
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|subcat=Schema formats
|released=2011
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|released=2011-01-31
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|extensions={{ext|xsd}}
 
}}
 
}}
 
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'''DFDL''' (Data Format Definition Language) is a file format for describing file formats. It is an [[XML]]-based schema that allows arbitrary binary or text-based data formats to be described in a manner which allows the automated parsing of the data file into a corresponding XML file with the same data elements in the same order, capable of round-trip transformations to and from the original data format without loss. A DFDL document consists of an [[XML Schema Definition|XML schema]] describing the data fields of a format, supplemented with annotations which describe how the data is stored (defining delimiters, [[endianness]], etc.).
'''DFDL''' (Data Format Definition Language) is a file format for describing file formats. It is an [[XML]]-based schema that allows arbitrary binary or text-based data formats to be described in a manner which allows the automated parsing of the data file into a corresponding XML file with the same data elements in the same order, capable of round-trip transformations to and from the original data format without loss. A DFDL document consists of an XML schema describing the data fields of a format, supplemented with annotations which describe how the data is stored (defining delimiters, [[endianness]], etc.).
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A partial (and not quite fully standards-compliant) implementation of a DFDL parser has been released as the open-source project Defuddle. Implementation is in progress of a new, improved DFDL parser called Daffodil.
 
A partial (and not quite fully standards-compliant) implementation of a DFDL parser has been released as the open-source project Defuddle. Implementation is in progress of a new, improved DFDL parser called Daffodil.
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DFDL schema files generally have the .xsd extension, denoting [[XML Schema Definition]]s.
  
 
== Format specs ==
 
== Format specs ==
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* [https://opensource.ncsa.illinois.edu/confluence/display/DFDL/Daffodil%3A+Open+Source+DFDL;jsessionid=02CAA258D60731554A202263495C6F4F Daffodil (in progress)]
 
* [https://opensource.ncsa.illinois.edu/confluence/display/DFDL/Daffodil%3A+Open+Source+DFDL;jsessionid=02CAA258D60731554A202263495C6F4F Daffodil (in progress)]
 
* [http://www-03.ibm.com/software/products/us/en/integration-bus IBM Integration Bus (formerly WebSphere Message Broker)] is commercial software that includes a DFDL parser/mapper
 
* [http://www-03.ibm.com/software/products/us/en/integration-bus IBM Integration Bus (formerly WebSphere Message Broker)] is commercial software that includes a DFDL parser/mapper
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== Sample files ==
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* [http://dfdlschemas.github.io/ DFDL schemas]
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** [https://github.com/DFDLSchemas/ISO8583 ISO 8583]
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** [https://github.com/DFDLSchemas/IBM4690-TLOG IBM4690-TLOG]
  
 
== Other links ==
 
== Other links ==
 
* [http://www.ogf.org/dfdl/ Official DFDL site]
 
* [http://www.ogf.org/dfdl/ Official DFDL site]
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* [http://redmine.ogf.org/projects/dfdl-wg DFDL WG]
 
* [[Wikipedia:Data Format Description Language|Wikipedia article]]
 
* [[Wikipedia:Data Format Description Language|Wikipedia article]]
 
* [http://cet.ncsa.uiuc.edu/projects/naraDefuddle.html Investigations of Data Representation]
 
* [http://cet.ncsa.uiuc.edu/projects/naraDefuddle.html Investigations of Data Representation]

Latest revision as of 16:29, 14 August 2017

File Format
Name DFDL
Ontology
Extension(s) .xsd
Released 2011-01-31

DFDL (Data Format Definition Language) is a file format for describing file formats. It is an XML-based schema that allows arbitrary binary or text-based data formats to be described in a manner which allows the automated parsing of the data file into a corresponding XML file with the same data elements in the same order, capable of round-trip transformations to and from the original data format without loss. A DFDL document consists of an XML schema describing the data fields of a format, supplemented with annotations which describe how the data is stored (defining delimiters, endianness, etc.).

A partial (and not quite fully standards-compliant) implementation of a DFDL parser has been released as the open-source project Defuddle. Implementation is in progress of a new, improved DFDL parser called Daffodil.

DFDL schema files generally have the .xsd extension, denoting XML Schema Definitions.

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[edit] Sample files

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