The National Archives
Search our website
  • Search our website
  • Search our records
Image of software box and CD PRONOM
Welcome (PRONOM  home page) About PRONOM Add an entry
Search Help - opens in a new window Information resources - opens in a new window

*Details: File format summary



Search by keyword Search by file format Search by PUID Search by software Search by vendor Search by lifecycles Search by Migration Pathway

Details for:

Save as... XML | CSV Printer friendly version


Name SIARD (Software-Independent Archiving of Relational Databases)
Version 1.0
Other names  
Identifiers PUID:  fmt/161
Classification Database
Disclosure Full
Description Software-Independent Archiving of Relational Databases is a format for storing content of relational databases in files for long-term preservation e.g. in archives. The format was developed by the Swiss Federal Archives. It is an open standard and is supported by the SIARD software of the Swiss Federal Archives. SIARD format is a ZIP file (based on the 64 bit extension of the ZIP format introduced by PkWare Inc. with version 4.5 of the ZIP format definition in order to avoid size limitations which are unrealistic for databases). The ZIP file contains an XML file describing the database structure (database metadata) as well as a collection of XML files describing the table content (database primary data) as well as - optionally - some text files and some binary files representing database large objects (BLOBs and CLOBs). SIARD format is used for archiving databases adhering to the SQL (ideally SQL:1999 core) standard.
Orientation Binary
Byte order Little-endian (Intel)
Related file formats Has priority over ZIP Format  
Technical Environment  
Supported until  
Format Risk  
Developed by Swiss Federal Archives / Swiss Federal Archives
Supported by Swiss Federal Archives / Swiss Federal Archives
Source Swiss Federal Archives / Swiss Federal Archives
Source date 03 Feb 2009
Source description  
Last updated 22 Jul 2010
Top of page Top of page
The National Archives Newsletter Icon

Send me The National Archives’ newsletter

A monthly round-up of news, blogs, offers and events.