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A node X is a gatekeeper if there is some pair of distinct nodes Y and Z such that X lies on every path from
A node X is a gatekeeper if there is some pair of distinct nodes
Y and Z such that X lies on every path from Y to Z and X is neither Y or Z A node is
a local gatekeeper if some pair of its neighbors do not have an edge between them
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Microsoft SQL Server 2012 Unleashed
Authors: Ray Rankins, Paul Bertucci
1st Edition
0133408507, 9780133408508
