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...

The relational calculus consists of two calculi, the tuple relational calculus and the domain relational calculus, that is part of the relational model...

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

construction Relational calculus Relational database Relational model SQL Theory of relations Triadic relation Tuple relational calculus In Unicode, the Left...

In computer science, domain relational calculus (DRC) is a calculus that was introduced by Michel Lacroix and Alain Pirotte as a declarative database...

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...

of tuples, grouped into relations. A database organized in terms of the relational model is a relational database. The purpose of the relational model...

technique for relational databases Relational concept, a set of mathematically defined tuples in tuple relational calculus Relational model, a database...

A relational database (RDB) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. A Relational Database Management System...

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...

; Fagin, Ronald (2012). "A Normal Form for Preventing Redundant Tuples in Relational Databases" (PDF). Proceedings of the 15th International Conference...

communicating processes Relational calculus, a calculus for the relational data model Domain relational calculus Tuple calculus Refinement calculus, a way of refining...

database language for relational databases, relations are represented by tables, where each row of a table represents a single tuple, and where the values...

computing: Join (relational algebra), a binary operation on tuples corresponding to the relation join of SQL Join (SQL), relational join, a binary operation...

key Relational database Entity relationship diagram Strongly typed identifier Corresponding terms are respectively theoretical (attribute, tuple, relation)...

relationships, using a set of operations based on the mathematical system of relational calculus (from which the model takes its name). Splitting the data into a...

operators. Relational calculus – consists of two calculi, the tuple relational calculus and the domain relational calculus, that are part of the relational model...

First-order logic, also called predicate logic, predicate calculus, or quantificational logic, is a collection of formal systems used in mathematics, philosophy...

worlds. Thus, the relational semantics interprets formulas of modal logic using models defined as follows. A relational model is a tuple M = ⟨ W , R , V...

logic Relational model, an approach to managing data Relation (database), a component of a relational database Relational algebra Relational calculus Relational...

subset of the Cartesian product X1 × ... × Xn; that is, it is a set of n-tuples (x1, ..., xn), each being a sequence of elements xi in the corresponding...

that relational algebra and the domain-independent relational calculus queries, two well-known foundational query languages for the relational model...

lambda calculus and in functional programming languages, and provide a means to allow for recursive definitions. In the classical untyped lambda calculus, every...

std::endl ; Relational operators are available (among tuples with the same number of elements), and two expressions are available to check a tuple's characteristics...

and the manipulation part is expressed using the relational algebra, tuple calculus and domain calculus. A data model instance is created by applying a...

treatments of logic. Formally, a (single-sorted) signature can be defined as a 4-tuple σ = ( S func , S rel , S const , ar ) , {\displaystyle \sigma =\left(S_{\operatorname...

(X,Y,G)} , as normally a proper class cannot be a member of an ordered tuple; or of course one can identify the binary relation with its graph in this...

invented by Robin Milner Relational calculus, a calculus for the relational data model Domain relational calculus Tuple calculus, inspired the SQL language...

implemented Plankalkül on any of his Z-series machines. Kalkül (from Latin calculus) is the German term for a formal system—as in Hilbert-Kalkül, the original...

structures with no functions are studied as models for relational databases, in the form of relational models. In the context of mathematical logic, the term...