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Keywords:
Immutable,
Parentheses,
Sequence,
Finite,
Attribute
Pronounced "en-too-pull." This is a mathematical term for a finite sequence of n terms. For example, the set {1, 2, 3, 4} is a four-tuple. The set {Frank,...
A collection of one or more database attributes.
a collection of fields
a collection of values that is similar to a record but where the members do not have names
a (compound) value, while a list is a bucket
a grouping of several values in a single expression
a mutable sequence
an immutable aggregate of values comprised of a name and zero or more labeled fields
an immutable collection of objects separated by commas, usually enclosed in ()
an immutable list
an immutable sequence
an instance of the relation where the fields represent the key fields and value fields of a particular object
an ordered multiset of attributes , which are ordered pairs of domain and value
an ordered sequence of Fields, and implements the non-subclassable (structure-equivalence) version
an ordered sequence of values enclosed in parentheses
an ordered set of values (e
an unordered set of attribute values
a partial function from attribute names to atomic values
a sequence of fields that contain either a value or a variable
a sequence of items and can be used as a key-value pair
a sequence of objects of mixed type
a sequence of typed fields, where each expression has a value or a potential value
a sequence, written with parens, that behaves just like a list except that it cannot be changed in place
a set of attributes, which are ordered pairs of domain and value
a set of triples, each consisting of name, type (domain), and value, where the names are unique
a set of values that are associated with each other and passed around together as a group
a small set of fields holding values or variables, as in the following examples
A list of two or more values or expressions.
An ordered collection of members from different dimensions. For example, (Boston, [1995]) is a tuple formed by members of two dimensions: Geography and Time. A single member is a degenerated case of a tuple and can be used as an expression without the parentheses.
(RM) A function that assigns a constant value from the attribute domain to each attribute in a relation scheme. tables.php
A storage unit in a relational database. Each unit contains an ordered set of attribute values that are grouped together in 2-dimensional tables known as relations.
a set of values - In Python, a "tuple" is used to describe a set of two or more values which do not have to be of the same type. Python 2.0 tuple members cannot receive direct assignment, but an easy workaround is to regenerate the set to incorporate a changed value. Tuples are very useful for passing multiple values from one function to another in one step. A good example is a Tkinter font tuple: 'Helvetica',10,'bold' for 10-point Helvetica Bold, where the face and style are of type text but the point size is of type integer.
An ordered sequence of fixed length of values of arbitrary types. Tuples are used for both data storage and interprocess communication in the generative communication paradigm.
In programming languages, a tuple is an ordered set of values. Common uses for the tuple as a data type are: for passing a string of parameters from one program to another, or to represent a set of value attributes in a relational database.
A set of values for an attribute, synonymous with row.
In mathematics, a tuple is a finite sequence (also known as an "ordered list") of objects, each of a specified type. A tuple containing n objects is known as an "n-tuple". For example the 4-tuple (or "quadruple"), with components of respective types PERSON, DAY, MONTH and YEAR, could be used to record that a certain person was born on a certain day of a certain month of a certain year.
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