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...
16 KB (2,181 words) - 01:50, 15 July 2024
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...
2 KB (266 words) - 02:47, 15 July 2024
A tuple space is an implementation of the associative memory paradigm for parallel/distributed computing. It provides a repository of tuples that can be...
13 KB (1,453 words) - 08:28, 1 April 2024
operators. New tuples can supply explicit values or be derived from a query. Similarly, queries identify tuples for updating or deleting. Tuples by definition...
32 KB (3,839 words) - 09:34, 12 August 2024
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...
10 KB (1,060 words) - 01:03, 28 January 2024
Product type (redirect from Tuple type)
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...
4 KB (469 words) - 10:59, 15 August 2024
Row (database) (redirect from Tuple (database))
In a relational database, a row, a.k.a. record or tuple, represents a single, implicitly structured data item in a table. A database table can be thought...
2 KB (222 words) - 05:51, 31 July 2024
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...
15 KB (2,295 words) - 18:23, 10 December 2022
computer scientist Edgar F. Codd, where all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational...
30 KB (4,208 words) - 19:11, 26 August 2024
Transmission Control Protocol (redirect from TCP four tuple)
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...
109 KB (12,825 words) - 02:48, 28 August 2024
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...
25 KB (3,089 words) - 16:46, 14 July 2024
similarly to what is dubbed RDBMS, Tuple Stores, also known as Triple Store or Quad Store but also Generic Tuple Store, Document database, that mimics...
7 KB (789 words) - 18:20, 6 August 2024
a tuple of values sequentially computed are going to be useful only if the whole tuple meet certain conditions. Knowing that a value of the tuple invalides...
1 KB (157 words) - 02:43, 11 May 2021
The Pseudo K-tuple nucleotide composition or PseKNC, was extended from Chou's Pseudo amino acid composition (PseAAC). Both PseAAC and PseKNC are of vector...
3 KB (326 words) - 17:47, 22 August 2024
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...
9 KB (986 words) - 16:50, 20 July 2024
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....
10 KB (1,295 words) - 08:26, 1 April 2024
all tuples found in either relation (union), removing tuples from the first relation found in the second relation (difference), extending the tuples of...
51 KB (6,333 words) - 19:48, 15 August 2024
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...
4 KB (555 words) - 23:07, 28 March 2024
bringing many language additions like tuples in rest parameters and spread expressions, rest parameters with tuple types, generic rest parameters and so...
45 KB (3,434 words) - 08:03, 9 August 2024
basis for most others. Although latitude and longitude form a coordinate tuple like a cartesian coordinate system, the geographic coordinate system is...
22 KB (2,491 words) - 18:21, 12 August 2024
of attributes that uniquely identifies each tuple of a relation. Because superkey values are unique, tuples with the same superkey value must also have...
5 KB (549 words) - 06:18, 23 March 2024
nested_loop_join is for each tuple r in R do for each tuple s in S do if r and s satisfy the join condition then yield tuple <r,s> This algorithm will involve...
2 KB (335 words) - 08:22, 14 February 2024
Essential tuple normal form (ETNF) is a normal form used in database normalization. It lies strictly between fourth normal form (4NF) and fifth normal...
2 KB (272 words) - 12:07, 12 August 2024
Result of FISH analysis using LSI probe (TUPLE 1) from DiGeorge/velocardiofacial syndrome critical region. TUPLE 1 (HIRA) probe was labeled in Spectrum...
49 KB (5,271 words) - 23:49, 7 July 2024
compound data types: Tuples Tuples are containers for a fixed number of Erlang data types. The syntax {D1,D2,...,Dn} denotes a tuple whose arguments are...
42 KB (4,758 words) - 23:01, 4 July 2024
with or without an index. Originally based upon relational algebra and tuple relational calculus, SQL consists of many types of statements, which may...
40 KB (3,765 words) - 20:25, 25 August 2024
Pythagorean triple (redirect from Pythagorean n-tuple)
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...
81 KB (11,394 words) - 17:10, 7 August 2024
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...
10 KB (2,013 words) - 17:06, 9 August 2024
list_of_lists for elem in lst] def catmull_rom_spline( P0: tuple, P1: tuple, P2: tuple, P3: tuple, num_points: int, alpha: float = 0.5, ): """ Compute the...
14 KB (2,179 words) - 14:13, 31 May 2024
Twin prime (redirect from Prime k-tuples conjecture)
above. The fully general first Hardy–Littlewood conjecture on prime k-tuples (not given here) implies that the second Hardy–Littlewood conjecture is...
21 KB (2,628 words) - 22:57, 25 August 2024