The correct statements are: 2-SAT is in P but 3-SAT is NP-complete. SHORTEST-PATH is in P but LONGEST-PATH is NP-complete. EDGE-COVER is in P but VERTEX-COVER is NP-complete. 4-COLORABLE is in P but 3-COLORABLE is NP-complete.

The correct statements are: 2-SAT is in P but 3-SAT is NP-complete. SHORTEST-PATH is in P but LONGEST-PATH is NP-complete. EDGE-COVER is in P but VERTEX-COVER is NP-complete. 4-COLORABLE is in P but 3-COLORABLE is NP-complete.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Strongly Connected Components

A directed graph in which a path exists between all its pairs of vertices is called a strongly connected graph. A portion of the strongly connected directed graph that contains a path to reach from each vertex to other vertices is called a strongly connected component (SCC).

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