The Digital Curation Centre has released a new briefing paper on "Database Archiving."
Here's an excerpt:
Database archiving is usually seen as a subset of data archiving. In a computational context, data archiving means to store electronic documents, data sets, multimedia files, and so on, for a period of time. The primary goal is to maintain the data in case it is later requested for some particular purpose. Complying with government regulations on data preservation are for example a main driver behind data archiving efforts. Database archiving focuses on archiving data that are maintained under the control of a database management system and structured under a database schema, e.g., a relational database.