All of the perl ones work that way, except for the latest version of Class::DBI which does some tricks with an index of loaded objects and weakrefs to avoid this. And that has caused so many user complaints that I'm hoping to turn it off in the next release.
ORM or not, once you retrieve data from the database and hold it in a variable, it has no way of knowing that the underlying database has been changed. This usually doesn't matter since the data is kept in variables for only a short time. Where it does matter, people have to use locking schemes to deal with it.
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