A relation is anything on a cartesian plane (a graph).
The domain is all the first coordinates in a relation. A relation is two ordered pairs.
Domt ask me I don't even know•
a function is a one-to-one and many-to one relation
Algebra is a branch of mathematics concerning the study of structures, relation and quantity. Together with geometry, analysis, combinatorics and number theory, Algebra is one of the main branches of mathematics.
Input is the first coordinate of an ordered pair in relationand Output is the second coordinate of an ordered pair in relation
algebra
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The domain is all the first coordinates in a relation. A relation is two ordered pairs.
Any set of ordered pairs. {(0,0),(2,3),(2,-7)} is a relation.
Domt ask me I don't even know•
a function is a one-to-one and many-to one relation
Algebra is a branch of mathematics concerning the study of structures, relation and quantity. Together with geometry, analysis, combinatorics and number theory, Algebra is one of the main branches of mathematics.
Louise Hoy Chin has written: 'Distributive and modular laws in the arithmetic of relation algebras' -- subject(s): Abstract Algebra, Algebra, Abstract
Relational Schema refers to meta-data elements which are used to describe structures and constraints of data representing a particular http://wiki.answers.com/Describe_the_differences_in_meaning_between_the_terms_relation_and_relation_schema#. Whereas a relation is a property or predicate that ranges over more than one argumentHere's some translation from "Relational Algebra" to http://wiki.answers.com/Describe_the_differences_in_meaning_between_the_terms_relation_and_relation_schema#terminology:"Relation" = Table."Relation Schema" = Table definition.So for example, the "schema" for the Person "relation" is: Person(FirstName, LastName, Age, Gender, Address)Also in relational Algebra, a "tuple" is a table row, and an "attribute" is a table column.
Input is the first coordinate of an ordered pair in relationand Output is the second coordinate of an ordered pair in relation
Closed phrase Ex. 5+8 No relation No placeholder So, Evaluate Ex.13
In relational algebra, the extension of a relation with respect to the operation "select" can be expressed as the subset of the relation that satisfies a specified condition. If R is a relation and σ(condition)(R) denotes the select operation, the extension can be represented as { t ∈ R | condition(t) is true }, where t represents a tuple in the relation R. This results in a new relation containing only those tuples that meet the given criteria.