
218 Large Scale and Big Data
presence of a multivalued property with multiplicity m can be implicitly represented
as a single triplegroup in NTGA. However, similar to systems such as Pig that sup-
port nested data models but do not support nesting-aware operators, the earlier gen-
eration NTGA operators require unnesting of such implicit representations prior to
any subsequent join operation. This unnesting introduces redundancy in intermedi-
ate results. In the next section, we describe unnesting strategies for efcient man-
agement of redundancy while processing graph pattern queries with multivalued
properties.
6.9.1 unnesting strategies For ...