WebA superkey is a combination of attributes that can be uniquely used to identify a database record. A table might have many superkeys. Candidate keys are a special subset of … WebThe minimal set of super key is called State true or false i) A candidate key is a minimal super key. ii) A candidate key can also refer to as surrogate key. Minimal data redundancy means improved _________: Which forms simplifies and ensures that there is minimal data aggregates and repetitive groups:
Primary, Candidate and Alternate key by Aashish Panthi
WebThe minimal set of super key is called Q. The minimal set of super key is called A. primary key: B. secondary key: C. foreign key: D. candidate key: Answer» D. candidate key View all … WebSuperkey. In the relational data model a superkey is a set of attributes that uniquely identifies each tuple of a relation. [1] [2] Because superkey values are unique, tuples with the same superkey value must also have the same non-key attribute values. That is, non-key attributes are functionally dependent on the superkey. request basic dbs check gov uk
Differences between key, superkey, minimal superkey, …
WebA Super keys for which no proper subset is a super key. Such a minimal Super keys are called _______ Primary key Simple Key Candidate Key Foreign Key 4 . We shall use the term ________ to denote a candidate key that is chosen by the database designer as the principal means of identifying entities within in an entity set. Primary key Super Key WebAll the attributes in a super key are definitely sufficient to identify each tuple uniquely in the given relation but all of them may not be necessary. 2. Candidate Key- A minimal super key is called as a candidate key. OR. A set of minimal attribute(s) that can identify each tuple uniquely in the given relation is called as a candidate key ... WebJul 1, 2024 · In other words, the minimal super key is a candidate key. Primary key: The attribute or set of attributes which uniquely identify a single row in a table is called … proportal sheffcol