With {{Version|9.0}}, the new {{Code|xquery}} format is available. It is more flexible and light-weight than the {{Code|map}} format, which has been dropped.
CSV records can be converted to a plain sequence of arrays:
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The resulting representation consumes less memory than XML-based formats, and values can be directly accessed without conversion. Thus, it is recommendable for very large inputs and for efficient ad-hoc processing. Before {{Version|9.0}}, a {{Code|map}} format was available, which was now replaced with the more flexible and light-weight {{Code|xquery}} format.