An n-tuple is a tuple of n elements, where n is a non-negative integer. There is only one 0-tuple, called the empty tuple. A 1-tuple and a 2-tuple are...

A tuple space is an implementation of the associative memory paradigm for parallel/distributed computing. It provides a repository of tuples that can be...

Tuple-versioning (also called point-in-time) is a mechanism used in a relational database management system to store past states of a relation. Normally...

theory, a prime k-tuple is a finite collection of values representing a repeatable pattern of differences between prime numbers. For a k-tuple (a, b, …), the...

operators. New tuples can supply explicit values or be derived from a query. Similarly, queries identify tuples for updating or deleting. Tuples by definition...

Tuple calculus is a calculus that was created and introduced by Edgar F. Codd as part of the relational model, in order to provide a declarative database-query...

represented by an n-dimensional array, where each element is an n-tuple. An ordered pair is a 2-tuple or couple. More generally still, one can define the Cartesian...

computer scientist Edgar F. Codd, where all data are represented in terms of tuples, grouped into relations. A database organized in terms of the relational...

The expression of an instance of a product type will be a tuple, and is called a "tuple type" of expression. A product of types is a direct product...

In a relational database, a row or "record" or "tuple", represents a single, implicitly structured data item in a table. A database table can be thought...

mathematics, a circular shift is the operation of rearranging the entries in a tuple, either by moving the final entry to the first position, while shifting...

database theory, a relation, as originally defined by E. F. Codd, is a set of tuples (d1,d2,...,dn), where each element dj is a member of Dj, a data domain....

Essential tuple normal form (ETNF) is a normal form used in database normalization. It lies strictly between fourth normal form (4NF) and fifth normal...

and tuple type: The depth attribute defines the number of channels in the image, such as 1 for greyscale images and 3 for RGB images. The tuple type...

sees any evidence of an attack. A TCP connection is identified by a four-tuple of the source address, source port, destination address, and destination...

in Python). Tuples, written as (1, 2, 3), are immutable and thus can be used as the keys of dictionaries, provided that all of the tuple's elements are...

This is an incomplete list of football clubs that have won four or more trophies in a single season. In a football season, clubs typically compete in many...

In relational database theory, a tuple-generating dependency (TGD) is a certain kind of constraint on a relational database. It is a subclass of the class...

bringing many language additions like tuples in rest parameters and spread expressions, rest parameters with tuple types, generic rest parameters and so...

The Pseudo K-tuple nucleotide composition or PseKNC, is a method for converting a nucleotide sequence (DNA or RNA) into a numerical vector so as to be...

is a Pythagorean n-tuple for any tuple of positive integers (m1, ..., mn) with m2 1 > m2 2 + ... + m2 n. The Pythagorean n-tuple can be made primitive...

Once the radius is fixed, the three coordinates (r, θ, φ), known as a 3-tuple, provide a coordinate system on a sphere, typically called the spherical...

⁠ above. The fully general first Hardy–Littlewood conjecture on prime k-tuples (not given here) implies that the second Hardy–Littlewood conjecture is...

In mathematics, especially order theory, a partial order on a set is an arrangement such that, for certain pairs of elements, one precedes the other. The...

existence of a tuple in the database, then the database could be in two different states with respect to that tuple—the first state contains the tuple, while...

some contexts, for tuples, which are finite sequences (of numbers or other objects) of a fixed length. Both geometric vectors and tuples can be added and...

{\displaystyle R} tuples. Here groups are disjoint sets of tuples in R {\displaystyle R} and the union of all groups has the same tuples as R {\displaystyle...

QUEL is a relational database query language, based on tuple relational calculus, with some similarities to SQL. It was created as a part of the Ingres...

relational databases, such as SQL, group scalars into tuples, which are then enumerated in tables. Tuples and objects have some general similarity, in that...

truth-valued function – is the set of tuples of values that, used as arguments, satisfy the predicate. Such a set of tuples is a relation. For example, the...