713 views
1 votes
1 votes

I want to also ask what in general is the meaning of arrow emannating from the relationship-diamond to an entity-rectangle (as in case of R to C)?

1 Answer

2 votes
2 votes

the arrow  between two entity is what type of realtionship exists

in the given problem relation from A to B is many to one(many values of A mapped to single value of B)

and realtion from A to C is aslo many to one 

so the answer is D

Related questions

3 votes
3 votes
1 answer
1
Rakesh K asked Aug 26, 2016
2,200 views
"Assuming a cache of 4K blocks, a 4-word block size, and a 32‐bit address, find the total number of sets and the total number of tag bits for caches that are direct map...
4 votes
4 votes
1 answer
2
radha gogia asked Jul 26, 2015
3,109 views
1:1 1:M M:1 M:N
0 votes
0 votes
0 answers
4