2 votes 2 votes Under a relational database if table A has a foreign key constraint referencing to another table B, then Each tuple in A is related to zero or one tuple of B. Each tuple in A is related to exactly one tuple of B. Each tuple of A is related to zero or more tuple of B. None of these. Databases database-design test-series relational-model + – LRU asked Sep 28, 2021 LRU 306 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply Agent24 commented Oct 1, 2021 reply Follow Share whats the answer you got for this? Thanks 1 votes 1 votes LRU commented Oct 4, 2021 reply Follow Share How to figure out which table has FK and which table has PK? 0 votes 0 votes Please log in or register to add a comment.
Best answer 1 votes 1 votes The answer is option “b” Each tuple in A is related to exactly one tuple of B. as per the referential integrity constraint, a foreign key is the subset of the primary key of another relation. rish1602 answered Dec 5, 2021 selected Jan 3, 2022 by LRU rish1602 comment Share Follow See all 0 reply Please log in or register to add a comment.