Consider the following four maps: 1) 2) 3) 4) Select all, but only, the maps which are correspondences. O map 1 map 2 O map 3 O map 4

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Chapter1: Introduction
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Consider the following four maps:
1)
2)
3)
4)
Select all, but only, the maps which are correspondences.
O map 1
О mаp 2
map 3
О map 4
23
Transcribed Image Text:Consider the following four maps: 1) 2) 3) 4) Select all, but only, the maps which are correspondences. O map 1 О mаp 2 map 3 О map 4 23
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