WebFeb 21, 2024 · Used to serve as a unique identifier for each row in a table. Uniquely determines a row which isn’t primary key. Cannot accept NULL values. Can accepts NULL … WebWhen an attribute is included in a composite primary key, it automatically becomes a candidate key for that table. When an attribute is part of a composite primary key, it is …
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WebChapter 11 Functional Dependencies Adrienne Watt. A functional dependency (FD) is a relationship between two attributes, typically between the PK and other non-key attributes … WebFeb 21, 2024 · Every non-primary-key attribute is fully functionally dependent on the primary key 3NF: The third normal form is based on the concept of transitive dependency. A … etymology of jubilee
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WebDBMS Interview Questions for beginners and professionals with a list of top frequently asked DBMS interviewing questions and answers with java, .net, php, database ... WebFirst, it should be in 2NF and if there exists a non-trivial dependency between two sets of attributes X and Y such that X → Y ( i.e. Y is not a subset of X) then. a) Either X is Super Key. b) Or Y is a prime attribute. Given FD are XY → Z, and Z → Y and Super Key / Candidate Key are XZ and XY. a) FD: X Y → Z satisfies the definition of ... WebTranscribed image text: A relation is in 1NF but not in 2NF When there are non-primary key attributes that are not functional dependent on primary key. When there are multi-valued … etymology of jonesing