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...

Relation Relational database Relational database management system Tuple-versioning Codd, E.F (1969), Derivability, Redundancy, and Consistency of Relations...

the previous row. The null End_Date in row two indicates the current tuple version. A standardized surrogate high date (e.g. 9999-12-31) may instead be...

containing the new value(s), and distinguish between the rows using Tuple-versioning techniques. Type three: Add a new attribute to the existing row. Source:...

columns of type DATETIME: StartDate and EndDate. This is known as tuple versioning. These two additional columns define a period of time of "validity"...

as softargmax: 184  or normalized exponential function,: 198  converts a tuple of K real numbers into a probability distribution of K possible outcomes...

a result, TUPLE [A, B, C] conforms to (may be assigned to) TUPLE [A, B], to TUPLE [A] and to TUPLE (without parameters), the topmost tuple type to which...

customers ended in April 2015. This version introduced a new versioning system for the Java language, although the old versioning system continued to be used...

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...

than n tends to 1 as n tends to infinity. Cousin prime Prime gap Prime k-tuple Prime quadruplet Prime triplet Sexy prime Thomas, Kelly Devine (Summer 2014)...

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....

In twelve-tone equal temperament, one can start off with an ordered 12-tuple (tone row) of integers: (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11) representing...

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

left-side tuple has a suitable constructor. typedef std::tuple <int , double, string > tuple_1 t1; typedef std::tuple <char, short , const char * > tuple_2 t2...

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...

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...

{\displaystyle S^{2}} patches. The output of the network on each patch is a tuple as follows: ( p 1 , … , p C , c 1 , x 1 , y 1 , w 1 , h 1 , … , c B , x...

ESE supports a concurrency control mechanism called multi-versioning. In multi-versioning, every transaction queries a consistent view of the entire...

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...

concept of an integer index to an ordered tuple of indices. An n-dimensional multi-index is an n {\textstyle n} -tuple α = ( α 1 , α 2 , … , α n ) {\displaystyle...

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...

interchangeable; they are commonly distinguished by their position in an ordered tuple, or by a label, such as in "the x-coordinate". The coordinates are taken...

operator can be used to concatenate two tuples, which does not directly modify their contents, but produces a new tuple containing the elements of both. For...

known as a tuple space because its basic addressable unit is a tuple, an ordered sequence of typed data objects; specifically in Linda, a tuple is a sequence...

endpoint] Start at beginning of the list (lowest offset) consider each tuple in order. endcount = endcount−type. If endcount ≥ M−f then lower = offset...

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...

a tuple, known as an index tuple. An array is stored such that the position (memory address) of each element can be computed from its index tuple by...

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...

output results in an error message. For the black-and-white version of PAM (depth 1, tuple type BLACKANDWHITE), corresponding to PBM, PAM uses one byte...

with or without an index. Originally based upon relational algebra and tuple relational calculus, SQL consists of many types of statements, which may...