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AIMS is an efficient incarnation of Prima, which supports the same features of management and querying of transaction-database systems under schema evolution. The original PRIMA is based on XML DB that executes XQuery queries on XML data, which is not very efficient at the current state of art. In AIMS, we instead employ RDBMS-based query execution engine, to improve the performance. We also address the problem of temporal coalesce for the fragmented history by schema changes. For more detail check the paper at SIGMOD 2010 <bibref f="defbib.bib">Sigmod2010</bibref>


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