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"MDB Tools is a package of libraries and utilities that allow Unix-like systems to natively read Microsoft Access database (MDB) files." http://www.sourceforge.net/projects/mdbtools/
A simple way to interact with Access is via CSV files (see also the links there) - plain text files with comma-separet values (in German locale, Access does not allow to use commas though, because it is considered decimal separator, so use semicolons instead; Excel accepts commas though... (RS)