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sids.dbc is a 5 KB DBC fixture used only by the automated tests. It is the
compressed form of the sids.dbf example distributed with R's foreign
package and was obtained from the AGPL-3 read.dbc package by Daniela
Petruzalek. It is included so that the package tests are fast, reproducible,
and independent of network access.
The production-scale DATASUS files used for manual benchmarks are deliberately not distributed in this package.
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