The CITS SIARD (Content Information Type Specification for Relational Databases using SIARD) is a specification that describes how to package and preserve relational database content. This is primarily done by packaging SIARD files into information packages that conform to the Common Specification for Information Packages.

The specification helps you to apply a common way of storing multiple representations of a database (for example a proprietary backup and a SIARD snapshot) in a single package along with appropriate metadata and binary documentation of the dataset.



Used standards

  • Software Independent Archiving of Relational Databases (SIARD)
  • Data Entity Dictionary Specification Language (DEDSL) ‒ XML/DTD: ISO 22643:2003 (CCSDS 647.3-B-1:2002)
  • Common Specification for Information Packages (CS IP)
  • E-ARK Submission Information Package (E-ARK SIP)


We welcome all feedback in regard to the SIARD CITS specification - if you have any comments or proposals, please contact us per This email address is being protected from spambots. You need JavaScript enabled to view it.or leave your comments on GitHub!


Relational Database Archiving Interest Group

The DILCIS Board maintains a Relational DataBase Archiving Interest Group as the means of communication between the database archiving community. Specifically, a mailing list has been set up where information about SIARD, CITS SIARD, database archiving tools, best practices, case studies, and related news can be shared. As a list member, you will receive the latest news and information about database archiving from the developers of the SIARD specification and associated tools. You are also welcome to ask any questions about and share your personal practices in relational database archiving!

You can join the mailing list at

The Interest Group has also prepared two international case studies on relational database archiving: