1 votes 1 votes Can Prime attribute be NULL in any of the the Candidate key ?? Can Prime attribute be NULL in Primary key ?? Databases databases candidate-key database-normalization + – jatin khachane 1 asked Oct 23, 2018 jatin khachane 1 408 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Verma Ashish commented Oct 23, 2018 reply Follow Share By default prime attribute are NOT NULL So they can't be null 0 votes 0 votes jatin khachane 1 commented Oct 23, 2018 reply Follow Share Whether it is part of PK or CK ,, doesn't it matter ? So as prime attribute can't be null CK should not be NULL at any time ? 0 votes 0 votes Verma Ashish commented Oct 23, 2018 reply Follow Share Null should not be there in any prime attribute. So as prime attribute can't be null CK should not be NULL at any time ? Yes. 1 votes 1 votes jatin khachane 1 commented Oct 23, 2018 reply Follow Share Thanks : ) 0 votes 0 votes Please log in or register to add a comment.
