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Basic functions for accessing the SDB interface
For configuration options, see the docs for specific sdb
modules.
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Get a value from a db, using a uri in the form of ``sdb://<profile>/<key>``. If
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Set a value in a db, using a uri in the form of ``sdb://<profile>/<key>``.
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successfully set, return ``False``.
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Delete a value from a db, using a uri in the form of ``sdb://<profile>/<key>``. If
the uri provided does not start with ``sdb://`` or the value is not successfully
deleted, return ``False``.
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Check if value exists in sdb. If it does, return, otherwise generate a
random string and store it. This can be used for storing secrets in a
centralized place.
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