functional dependencies वाक्य
उदाहरण वाक्य
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- More formally, let \ langle R ( U ), F \ rangle denote a relational scheme over the set of attributes U with a set of functional dependencies F.
- For a description of the approximate parameterizations, see bisection : the functional dependencies on surface temperature are given, with " e " being the equilibrium vapor pressure.
- The functional dependencies, along with the attribute domains, are selected so as to generate constraints that would exclude as much data inappropriate to the user domain from the system as possible.
- The correlation ratio is able to detect almost any functional dependency, and the entropy-based mutual information, total correlation and dual total correlation are capable of detecting even more general dependencies.
- Many statistical inference methods can be thought of as implementing a function decomposition process in the presence of noise; that is, where functional dependencies are only expected to hold " approximately ".
- Given a set of functional dependencies F, an "'Armstrong relation "'is a relation which satisfies all the functional dependencies in the closure F ^ + and only those dependencies.
- Given a set of functional dependencies F, an "'Armstrong relation "'is a relation which satisfies all the functional dependencies in the closure F ^ + and only those dependencies.
- The experience of a service or product's use is consistent of three main forces : " familiarity ", " functional dependency, " and " emotional attachment ".
- "' A table is in Elementary Key Normal Form ( EKNF ), if and only if, all its elementary functional dependencies begin at whole keys or end at elementary key attributes . "'
- This definition states that a table is in 3NF if and only if, for each of its functional dependencies " X " ?! " A ", at least one of the following conditions holds:
- The observed functional dependency of suspension flux vs . pressure can therefore be used to derive bilayer elasticity / flexibility as well as permeability, based on theoretical description of the underlying enforced transport, viewed as an activated transport process.
- We say that a functional dependency f is logically implied by F, and denote it with F \ models f if and only if for every instance r of R that satisfies the functional dependencies in F, r also satisfies f.
- We say that a functional dependency f is logically implied by F, and denote it with F \ models f if and only if for every instance r of R that satisfies the functional dependencies in F, r also satisfies f.
- In other words, for each of the partitions of variables, by simplifying the expression for the distribution over the partition's variables and examining the distribution's functional dependency on the variables in question, the family of the distribution can usually be determined ( which in turn determines the value of the constant ).
- A notion of logical implication is defined for functional dependencies in the following way : a set of functional dependencies \ Sigma logically implies another set of dependencies \ Gamma, if any relation " R " satisfying all dependencies from \ Sigma also satisfies all dependencies from \ Gamma; this is usually written \ Sigma \ models \ Gamma.
- A notion of logical implication is defined for functional dependencies in the following way : a set of functional dependencies \ Sigma logically implies another set of dependencies \ Gamma, if any relation " R " satisfying all dependencies from \ Sigma also satisfies all dependencies from \ Gamma; this is usually written \ Sigma \ models \ Gamma.
- Another advantage of associated types over functional dependencies is that the latter requires clients using the type class to state all of the dependent types in their contexts, including ones they do not use; since associated types do not require this, adding another associated type to the class requires updating only the class's instances, while clients can remain unchanged.
- Furthermore, with respect to a set of inference rules A, we say that a functional dependency f is derivable from the functional dependencies in F by the set of inference rules A, and we denote it by F \ vdash _ { A } f if and only if f is obtainable by means of repeatedly applying the inference rules in A to functional dependencies in F.
- Furthermore, with respect to a set of inference rules A, we say that a functional dependency f is derivable from the functional dependencies in F by the set of inference rules A, and we denote it by F \ vdash _ { A } f if and only if f is obtainable by means of repeatedly applying the inference rules in A to functional dependencies in F.
- Furthermore, with respect to a set of inference rules A, we say that a functional dependency f is derivable from the functional dependencies in F by the set of inference rules A, and we denote it by F \ vdash _ { A } f if and only if f is obtainable by means of repeatedly applying the inference rules in A to functional dependencies in F.
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