Let R be a many-to-one relationship from E1 to E2 (sharp- arrow). Consider instances of E1 and E2 with m and n tuples, respectively. Then, what can we conclude about the possible number of tuples in R?

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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3. Let R be a many-to-one relationship from E1 to E2 (sharp-
arrow). Consider instances of E1 and E2 with m and n tuples,
respectively. Then, what can we conclude about the possible
number of tuples in R?
(a) at most m
(b) at most n
(c) exactly m
(d) exactly n
Transcribed Image Text:3. Let R be a many-to-one relationship from E1 to E2 (sharp- arrow). Consider instances of E1 and E2 with m and n tuples, respectively. Then, what can we conclude about the possible number of tuples in R? (a) at most m (b) at most n (c) exactly m (d) exactly n
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