Functional dependency - Wikipedia, the free encyclopedia
A functional dependency (FD) is a constraint between two sets of attributes in a relation from a database. Given a relation R , a set of attributes X in R is said to functionally determine a...
en.wikipedia.org/wiki/Functional_dependency
The concept of functional dependency (also known as normalization was introduced by professor Codd in 1970 when he defined the first three normal forms (first, second and third normal forms).
www.emunix.emich.edu/~khailany/files/Normalization.htm
Dependency grammar - Wikipedia, the free encyclopedia
Dependency grammar (DG) is a class of syntactic theories developed by Lucien Tesnière. It is distinct from phrase structure grammars, as it lacks phrasal nodes. Structure is determined by the relatio...
en.wikipedia.org/wiki/Dependency_grammar
What is a functional dependency? Find out here! ... Definition: A functional dependency occurs when one attribute in a relation uniquely determines another attribute. This can be written A -> B which would be the same as stating "B is functionally dependent upon A."
databases.about.com/library/glossary/bldef-functdep.htm
Computer Programming question: What is functional dependency in computer terms? Functional Dependency Functional Dependencies A Functional Dependency describes a relationship between attributes in a single ... Functional Dependencies A Functional Dependency describes a relationship between attributes in a single relation.
wiki.answers.com/Q/What_is_functional_dependency_in_com... wiki.answers.com/Q/What_is_functional_dependency_in_computer_terms
First Steps in Pointfree Functional Dependency Theory; (DRAFT OF OCTOBER 27, 2005); J.N. Oliveira; Dep. Inform´atica, Universidade do Minho, Campus de Gualtar, 4700-320 Braga, Portugal, jno@di.uminho.pt; Abstract.
www.di.uminho.pt/~jno/ps/_.pdf
a. represent the functional dependency arrow with -> b. represent the FD inference symbol with |= ... Find all the keys for each of the following relations and functional dependency sets, where R is the relation and F the functional dependency set. Show your work.
www.cs.odu.edu/~ibl/450/FTP/Assignments/func-dep-assign... www.cs.odu.edu/~ibl/450/FTP/Assignments/func-dep-assign/fd-assign.php
CSC 319 Database technology ... Homework 2 Functional dependecies and relational algebra ... There are two parts to assignment: Part I, Part II Part I Taken from the textbook...
facweb.cs.depaul.edu/ldettori/TEACHING/AY02-03/FALL/CSC... facweb.cs.depaul.edu/ldettori/TEACHING/AY02-03/FALL/CSC319/Homework/HW2/HW2.htm
Attributes X and Y may be {composite}. This is very close to a {function} in the mathematical sense. (1997-09-01 ... Free Definitions : Define functional dependency. What is functional dependency? ... Free Definitions: Software: Databases;
www.learnthat.com/define/hitting.asp?ID=6099
Now, if there are two attributes (or sets of attributes) A and B that are legal in the relation schema R, we can have a functional dependency where...
www.cs.umbc.edu/461/current/burt/lectures/lec14/index.h... www.cs.umbc.edu/461/current/burt/lectures/lec14/index.html
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