Question
Suppose R is an n-ary relationship between the entity sets E1, E2, E3, which has sharp arrows only at E1 and E2. If E1 has
Suppose R is an n-ary relationship between the entity sets E1, E2, E3, which has sharp arrows only at E1 and E2. If E1 has 3 tuples, E2 has 4 tuples, and E3 has 5 tuples, then the the maximum number of tuples R can have would be?
(a) 12
(b) 15
(c) 20
(d) 60
please explain how. Thank you
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Mastering PostgreSQL 12 Advanced Techniques To Build And Administer Scalable And Reliable PostgreSQL Database Applications
Authors: Hans-Jurgen Schonig
3rd Edition
1838988823, 978-1838988821
