Proceedings of the twenty-seventh ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
FLUX: functional updates for XML
Proceedings of the 13th ACM SIGPLAN international conference on Functional programming
On the expressiveness of implicit provenance in query and update languages
ACM Transactions on Database Systems (TODS)
Regular expression subtyping for XML query and update languages
ESOP'08/ETAPS'08 Proceedings of the Theory and practice of software, 17th European conference on Programming languages and systems
On the expressiveness of implicit provenance in query and update languages
ICDT'07 Proceedings of the 11th international conference on Database Theory
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Many of the publicly available biomedical data sources -- such as Genbank and SwissProt -- are not stored in traditional databases but in a variety of file formats (e.g. ASN.1 and EMBL). The data is complex, involving deeply nested structures. While query languages for such data have been well-studied, the issue of updating such databases has not. The need for a concise update language is critical since the changes to the data are typically very small when compared to the entire value.Starting with a query language called Collection Programming Language (CPL), we describe an extension called CPL+ which provides an intuitive framework for updates on complex values. We illustrate the language using examples and present various optimization that can substantially improve the performance of complex updates.