Represents an abstract clause for a metadata Query on a file.
a few handy definitions:
Representation:
for a Clause c and a (boolean) expression e, we say that c Represents e,
if the following holds:
for every file f, if there exists a row in f that meets e, than f meets c.
Represents an abstract clause for a metadata Query on a file. a few handy definitions: Representation: for a Clause c and a (boolean) expression e, we say that c Represents e, if the following holds: for every file f, if there exists a row in f that meets e, than f meets c.