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Functional Dependencies Are Similar To ________ Keys.
Functional Dependencies Are Similar To ________ Keys.. This collection of rules is called. The right side of this arrow is a dependent.
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D) none of the mentioned. B) no legal instance satisfies the functional dependency. Hence, composite primary key is the solution.
Solved Mcq's For Related Topics.
This is defined as the attributes domain. Considering the following tables, _____ is a primary key. Given a relational schema r( x, y,.
F Covers G (F ⊇ G)
Transitive functional dependency in dbms. A) at least one legal instance satisfies the functional dependency. The reason is, for some register numbers, we will get more than one value pointed.
Consequently, Don’t Look At The Sample Data To Determine Functional Dependencies, Look At The Set Of Values That An Attribute Can Have (Or The Reality Of The Data).
Either the value or the known factors can be the reason for this type of functional dependency occurrence. In relational database theory, a functional dependency is a constraint between two sets of attributes in a relation from a database. For example, we previously identified a functional dependency between s_code and s_name in both directions.
For Table1, The Following Is The Possible Key.
Before you go through this article, make sure that you have gone through the previous article on functional dependency. In other words, functional dependency is a constraint that describes the relationship between attributes in a relation.in sql, functional dependencies appear whenever there is a unique constraint (e.g. The right side of this arrow is a dependent.
Let Us Take An Example To Show The Relationship Between Two Fd Sets.
We review their content and use your feedback to keep the quality high. In the content area [functional dependencies] we established the following functional dependencies of the supplier table from the homewares database. (a) ps → t (b) r → t (c) p → r (d) ps → q answer:
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