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Set of tuples consisting of values indexed by attributes
In 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
Relation_(database)
Topics referred to by the same term
managing data Relation (database), a component of a relational database Relational algebra Relational calculus Relational database, a digital database Relationships
Relation
Digital database whose organization is based on the relational model of data
papers, he defined what he meant by relation. One well-known definition of what constitutes a relational database system is composed of Codd's 12 rules
Relational_database
Organized collection of data in computing
position in relation to other data) and providing that data either directly to the user, or making it available for further processing by the database itself
Database
Set of data elements in databases
are less strict about column datatype definitions. Relation (database) Row (database) Column (database) Virtual column Table (information) "cell". Merriam-Webster
Table_(database)
Reduction of data redundancy
introduced the sixth normal form (6NF) in 2003. Informally, a relational database relation is often described as "normalized" if it meets third normal form.
Database_normalization
Database model
relational model. A table in a SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints
Relational_model
Theory of relational databases
data are stored in the database) into a single output relation (the query results). Unary operators accept a single relation as input. Examples include
Relational_algebra
Relationship between elements of two sets
In mathematics, a binary relation associates some elements of one set called the domain with some elements of another set (possibly the same) called the
Binary_relation
Visual representation of database system relationships
overlapping elements specified in the input mapping is also in a database schema relation. Extended overlap preservation Source-specific elements that are
Database_schema
Relation with zero attributes
In mathematics, a nullary relation, 0-ary relation, or relation of degree zero is a relation with zero attributes. There are exactly two relations of degree
Nullary_relation
Concept in relational database design
database management systems, a unique key is a candidate key. All the candidate keys of a relation can uniquely identify the records of the relation,
Unique_key
Cartesian product of mathematical fuzzy sets
A fuzzy relation is the cartesian product of mathematical fuzzy sets. Two fuzzy sets are taken as input, the fuzzy relation is then equal to the cross
Fuzzy_relation
as a minimal exemplar of the interrelationships found in a database. The Supplier relation holds information about suppliers. The SID attribute identifies
Suppliers_and_Parts_database
Property that assigns truth values to k-tuples of individuals
relation is called the arity, adicity or degree of the relation. A relation with n "places" is variously called an n-ary relation, an n-adic relation
Finitary_relation
Overview of and topical guide to databases
(RDBMS) model: Relation – Table – Column – Row – View – Database transaction – Transaction log – history of actions executed by a database management system
Outline_of_databases
Term in relational and entity–relationship theory
relational database requires the implementation of a base relation (or base table) to resolve many-to-many relationships. A base relation representing
Associative_entity
Relative location of objects in space
A spatial relation specifies how some object is located in space in relation to some reference object. When the reference object is much bigger than the
Spatial_relation
Level of database normalization
basic level of database normalization defined by English computer scientist Edgar F. Codd, the inventor of the relational database. A relation (or a table
First_normal_form
Relationship between two sets, defined by a set of ordered pairs
a relation denotes some kind of relationship between two objects in a set, which may or may not hold. As an example, "is less than" is a relation on
Relation_(mathematics)
Use of AI by the Israel Defense Forces in the Gaza war
strike is excessive in relation to the military advantage. "Israel Defence Forces' response to claims about use of 'Lavender' AI database in Gaza". The Guardian
AI-assisted targeting in the Gaza Strip
AI-assisted_targeting_in_the_Gaza_Strip
Type of data model
tuples) and columns. Thus, the "relation" in "relational database" refers to the various tables in the database; a relation is a set of tuples. The columns
Database_model
In relational databases, relvar is a term introduced by C. J. Date and Hugh Darwen as an abbreviation for relation variable in their 1995 paper The Third
Relvar
Level of database normalization
normal form (3NF) is a level of database normalization defined by English computer scientist Edgar F. Codd. A relation (or table, in SQL) is in third normal
Third_normal_form
Digital asset using a distributed ledger
are stored in a digital ledger or blockchain, which is a computerized database that uses a consensus mechanism to secure transaction records, control
Cryptocurrency
Theorem of expressive equivalence between relational languages
"select all tuples other than those occurring in relation R", where R is a relation in the database. Assuming different domains, i.e., sets of atomic
Codd's_theorem
Northern Irish politician and child sex offender (born 1962)
sexual offences. His wife was also charged with aiding and abetting in relation to the same matter. He resigned as leader of the DUP the following day
Jeffrey_Donaldson
Database theory
The universal relation assumption in relational databases states that one can place all data attributes into a (possibly very wide) table, which may then
Universal_relation_assumption
American computer scientist (1946–1974)
he co-developed Structured Query Language (SQL) while managing the Relation Database development group for IBM in San Jose, California. He died on June
Raymond_F._Boyce
Divisioning of a logical database
logical database or its constituent elements into distinct independent parts. Database partitioning refers to intentionally breaking a large database into
Partition_(database)
Database data model
database normalization, unnormalized form (UNF or 0NF), also known as an unnormalized relation or non-first normal form (N1NF or NF2), is a database data
Unnormalized_form
Pseudonym of the creator of Bitcoin
part of the implementation, Nakamoto also devised the first blockchain database. Nakamoto was active in the development of bitcoin until December 2010
Satoshi_Nakamoto
Database using graph structures for queries
roughly the equivalent of a record, relation, or row in a relational database, or a document in a document-store database. Edges, also termed graphs or relationships
Graph_database
Type of decomposition of a database relation
In database design, a lossless join decomposition is a decomposition of a relation r {\displaystyle r} into relations r 1 , r 2 {\displaystyle r_{1},r_{2}}
Lossless_join_decomposition
Level of database normalization
normal form (2NF) is a level of database normalization defined by English computer scientist Edgar F. Codd. A relation (or a table, in SQL) is in 2NF if
Second_normal_form
Property of a thermodynamic system
applications in chemistry and physics, in biological systems and their relation to life, in cosmology, economics, and information systems including the
Entropy
Function of managing and maintaining DBMS software
Database administration is the function of managing and maintaining database management systems (DBMS) software. Mainstream DBMS software such as Oracle
Database_administration
This is one of Helix's most unusual and powerful features. In the Relation, database tables (groups of related data) are created. Relations contain fields
Helix_(database)
CC-inspired CCJP
within its database. The ruling looked at the meaning of the terms "extraction", "permanent transfer" and "temporary transfer" in relation to data, and
Database_Directive
Browser-based computing platform
created in relation to the publication of Web pages. This includes HTML, CSS, SVG, MathML, WAI-ARIA, ECMAScript, WebGL, Web Storage, Indexed Database API, Web
Web_platform
Phylum of animals having a dorsal nerve cord
vertebrates) Class †"Placodermi" (Paleozoic armoured forms; paraphyletic in relation to all other gnathostomes) Class Chondrichthyes (cartilaginous fish; 900+
Chordate
Set of columns in a relational database
design of database schema. The definition of candidate keys can be illustrated with the following (abstract) example. Consider a relation variable (relvar)
Candidate_key
Set of attributes that uniquely identifies each tuple of a relation
Introduction to Database Management Systems. Tata McGraw-Hill. 2005. p. 77. ISBN 9780070591196. no two tuples in any legal relation Saiedian, H. (1996-02-01)
Superkey
Country in Eastern Europe and West Asia
nations and primarily speak Georgian, a Kartvelian language that has no relation to any other language family in the world. Georgia has been inhabited since
Georgia_(country)
American actress, model, and singer (1921–2011)
singles chart in May 1954, selling two million copies. Della Russell, no relation to Jane, soon left the group, but Jane, Haines and Davis followed up with
Jane_Russell
Candidate key with two or more attributes in a database
Semantic Web Relation Database terms of reference, Keys: An overview of the different types of keys in an RDBMS Different types of keys in a database: An overview
Composite_key
Equation in materials science engineering
The Larson–Miller relation, also widely known as the Larson–Miller parameter and often abbreviated LMP, is a parametric relation used to extrapolate experimental
Larson–Miller_relation
Operation that restricts a relation to a specified set of attributes
{\displaystyle v} is an element of that attribute's domain — see Relation (database). The result of a projection Π a 1 , . . . , a n ( R ) {\displaystyle
Projection (relational algebra)
Projection_(relational_algebra)
Topics referred to by the same term
optimization problem that the solution must satisfy Constraint (mechanics), a relation between coordinates and momenta Constraint (computational chemistry) Constraint
Constraint
Mathematical set with an ordering
pair is comparable. Formally, a partial order is a homogeneous binary relation that is reflexive, antisymmetric, and transitive. A partially ordered set
Partially_ordered_set
Progressive neurodegenerative disease
"NEURODEGENERATION. Alzheimer's and Parkinson's diseases: The prion concept in relation to assembled Aβ, tau, and α-synuclein". Science. 349 (6248) 1255555. doi:10
Alzheimer's_disease
Prize established in 1895 by Alfred Nobel
conservative Carl David af Wirsén, assessed the literary quality of a work in relation to its contribution to humanity's pursuit of the "ideal." Leo Tolstoy,
Nobel_Prize_in_Literature
1932 Japanese film
"Retrospektive" program. "No Blood Relation". Japanese Movie Database (in Japanese). Retrieved 19 February 2021. "生さぬ仲 (No Blood Relation)". Kinenote (in Japanese)
No_Blood_Relation
Full constraint between two sets of attributes in a relation
In database theory, a multivalued dependency is a full constraint between two sets of attributes in a relation. In contrast to the functional dependency
Multivalued_dependency
Perennial woody plant with elongated trunk
(2015). "Formation of amphivasal vascular bundles in Dracaena draco stem in relation to rate of cambial activity". Trees. 29 (5): 1493–1499. Bibcode:2015Trees
Tree
Unsolved 2007 missing-person case
number of separate libel actions brought in the UK by the same person in relation to one issue; his friends received £100,000 each. In July 2014, during
Disappearance of Madeleine McCann
Disappearance_of_Madeleine_McCann
Association football club in Italy
city") since 1929. Despite initially not having any parent–subsidiary relation with the male and female professional team (that was incorporated as S
SS_Lazio
Mass shooting at a Tunisian tourist resort on 26 June 2015
27 June 2015. "Thomson and First Choice Statement – Customer Policy in relation to holidays to Tunisia - TUITravel Media Centre - Thomson". Archived from
2015_Sousse_attacks
Relational database theory concept
constraints over one relation (schema), whereas inclusion dependencies express constraints between relation schemas in a database schema. Furthermore,
Functional_dependency
Disease that damages the myelin sheaths around nerves
as diet and hormone intake, have been evaluated, but evidence on their relation with the disease is "sparse and unpersuasive". Gout occurs less than would
Multiple_sclerosis
Medication for pain and fever
2013). "Metabolism and disposition of acetaminophen: recent advances in relation to hepatotoxicity and diagnosis". Pharm Res. 30 (9): 2174–2187. doi:10
Paracetamol
Japanese writer (born 1949)
Milburn and Piotr Pietrzak] on Haruki Murakami to deliberate on the special relation between philosophy and an acclaimed Japanese literary writer. They argue
Haruki_Murakami
Japanese manga series
certain Limitations (制約, Seiyaku), their abilities are strengthened in relation to how strict they are. An example of this is Kurapika who, in order to
Hunter_×_Hunter
Database transaction integrity concept
In database systems, isolation is one of the ACID (Atomicity, Consistency, Isolation, Durability) transaction properties. It determines how transaction
Isolation_(database_systems)
Strategy used on previously-normalized databases
previously-normalized database to increase performance. In computing, denormalization is the process of trying to improve the read performance of a database, at the
Denormalization
Type of unique key in a database
a type of unique key in a database formed of attributes that exist and are used in the external world outside the database (i.e. in the business domain
Natural_key
1885 novel by Mark Twain
discuss Huck's own character, and the novel itself, in the context of its relation to African-American culture as a whole. John Alberti quotes Shelley Fisher
Adventures of Huckleberry Finn
Adventures_of_Huckleberry_Finn
State of increased suggestibility
cognitive behavioral therapy since as early as 1949. Hypnosis was defined in relation to classical conditioning; where the words of the therapist were the stimuli
Hypnosis
American actress and singer (born 1945)
Nights of Halloween), the film has achieved cult status over the years. In relation to Hocus Pocus, every year Midler hosts her annual Hulaween costume party
Bette_Midler
Where all data references are valid
valid. In the context of relational databases, it requires that if a value of one attribute (column) of a relation (table) references a value of another
Referential_integrity
Normal form used in database normalization
NP-complete, given a database schema in third normal form, to determine whether it violates Boyce–Codd normal form. If a relation R is not in BCNF due
Boyce–Codd_normal_form
Process of analyzing large data sets
involving methods at the intersection of machine learning, statistics, and database systems. Data mining is an interdisciplinary subfield of computer science
Data_mining
Greek goddess of spring and the queen of the underworld
the earth along with her. This aspect of the myth is an etiology for the relation of pigs with the ancient rites in Thesmophoria, and in Eleusis. Various
Persephone
Country in West Asia
government have been characterized as "demographic engineering", especially in relation to Kuwait's stateless Bedoon crisis and the history of naturalization in
Kuwait
Bitmap image file format family
context, short video clips are sometimes termed "GIFs" despite having no relation to the original file format. CompuServe introduced GIF on 15 June 1987
GIF
Subphylum of arthropods
relationships between the different extant groups of the paraphyletic Crustacea in relation to the class Hexapoda. According to this diagram, the Hexapoda are deep
Crustacean
British actor (born 1948)
Polanski, calling for his release after he was arrested in Switzerland in relation to his 1977 charge for drugging and raping a 13-year-old girl. In 2011
Jeremy_Irons
Italian western subgenre
Huston's The Treasure of the Sierra Madre), in which the explicit homosexual relation between two of its male main characters and some gay cueing scenes are
Spaghetti_Western
Open source dictionary and controlled language subset
Because these relation types are standardized and unambiguously defined, Gellish English becomes computer interpretable. The relation types in the dictionary-taxonomy
Gellish_English
Extinct species of bird
eyes, almost reaching their beak, as in dodos. The forehead was high in relation to the beak, and the nostril was located low on the middle of the beak
Dodo
vertical arms and 6:7 for the horizontal arms. The size of the cross in relation to the field was set in 2017 as 5:8. The Swiss flag is square, instead
Flag_of_Switzerland
Type of database
relation of an incomplete database, described in the formalism of NULL values: There are infinitely many possible worlds for this incomplete database
Uncertain_database
Tectonic plate in Central America and the Caribbean
Caribbean plate is moving eastward about 22 millimetres (0.87 in) per year in relation to the South American plate. In Venezuela, much of the movement between
Caribbean_plate
Object or record accepted as payment
very well: The relation between money growth and inflation was not as tight as expected by monetarist theory, and the short-run relation between the money
Money
Property of two varying quantities with a constant ratio
is a positive constant k such that: y = k x . {\displaystyle y=kx.} The relation is often denoted using the symbols ∝ (not to be confused with the Greek
Proportionality_(mathematics)
British politician (born 1971)
Parliamentary Commissioner for Standards after complaints were made in relation to invitations to a £45-a-head Labour Party fundraising event, sent using
Karl_Turner
Unit of volume
definition was reverted to, and thus the litre was once again defined in exact relation to the metre, as another name for the cubic decimetre, that is, exactly
Litre
SNRI antidepressant
controlled-release formulations: pharmacokinetics of newer antidepressants in relation to nausea". The Journal of Clinical Psychiatry. 64 (Suppl 18): 14–19. PMID 14700450
Venlafaxine
Legality of sexual relationships between family members
one person is a minor. A person who has sexual relations with a blood relation minor is punished to two years in prison. Consensual incest is legal in
Legality_of_incest
Inability to comprehend or formulate language
2012). "Attention and Other Cognitive Deficits in Aphasia: Presence and Relation to Language and Communication Measures" (PDF). American Journal of Speech-Language
Aphasia
Database algorithm
and enforcing implication of data dependencies in database systems. It plays important roles in database theory as well as in practice. It is used, directly
Chase_(algorithm)
Roman goddess of wisdom
Numerous loom weights have also been discovered at Lavinium, possibly in relation to the traditional association of women in prehistoric Italy with weaving
Minerva
State of low mood and aversion to activity
Lose Your Mother sheds light on the gaps in my own efforts to track the relation between depression and the histories of slavery, genocide, and colonialism
Depression_(mood)
Species of fish
directly to this species. According to Sven O. Kullander zaeus has no relation with the name of the king of gods in Greek mythology. However, other authors
John_Dory
Genus of flowering plants
Two distinctly different taxa within subsection Pseudovireya and their Relation to the Rooting of section Vireya within subgenus Rhododendron". Rhododendron
Rhododendron
Database management system
database system with a mathematical relation allows it to exploit many useful techniques and theorems from set theory. But these types of databases are
Object–relational_database
Relational database design
Codd, a pioneer of the relational model for databases, designed to define what is required from a database management system in order for it to be considered
Codd's_12_rules
Feature to efficiently execute queries efficiently in DBMS softwares
by IBM's System R database project [citation needed]. This algorithm works in two stages: First, all ways to access each relation in the query are computed
Query_optimization
System for reasoning about vagueness
network will take a variety of valued inputs, give them different weights in relation to each other, combine intermediate values a certain number of times, and
Fuzzy_logic
1988 American crime thriller film by Alan Parker
drawn from events that occurred at the time, although not necessarily in relation to this investigation. The title itself comes from the FBI code name for
Mississippi_Burning
RELATION DATABASE
RELATION DATABASE
Boy/Male
Assamese, Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Tamil, Telugu
Friend; Relation
Boy/Male
Indian
Relation
Boy/Male
Tamil
Srinjan | à®·à¯à®°à¯€Â நà¯à®œà®¨Â
Creation
Srinjan | à®·à¯à®°à¯€Â நà¯à®œà®¨Â
Boy/Male
Tamil
Relation
Boy/Male
Hindu, Indian
Leader; Relation
Girl/Female
Arabic, Muslim
Relation; Way; Sake
Boy/Male
Hindu, Indian
Relation
Girl/Female
Hindu, Indian
Friendship; Good Relation
Boy/Male
Indian
Of Husain, Nisba relation
Boy/Male
Hindu, Indian
Relation; Connection
Boy/Male
Muslim
Of Husain, Nisba relation
Girl/Female
Hindu, Indian
Relation
Girl/Female
Muslim
Relation, Way, Sake
Girl/Female
Tamil
Srijana | à®·à¯à®°à¯€à®œà®¾à®¨à®¾
Creation
Srijana | à®·à¯à®°à¯€à®œà®¾à®¨à®¾
Girl/Female
Tamil
Utpatti | உதà¯à®ªà®¤à¯à®¤à®¿
Creation
Utpatti | உதà¯à®ªà®¤à¯à®¤à®¿
Boy/Male
Tamil
Jasevaraj | ஜஸேவாராஜ
Heart of relation
Jasevaraj | ஜஸேவாராஜ
Girl/Female
Hindu
Creation
Boy/Male
Hindu, Indian
Heart of Relation
Boy/Male
Tamil
Creation
Girl/Female
Tamil
Nirmiti | நிரà¯à®®à®¿à®¤à®¿Â
Creation
RELATION DATABASE
RELATION DATABASE
Boy/Male
Indian
Manah
Girl/Female
Tamil
Sheelangi | ஷிலஂகீ
Good characte, Strong like a stone
Girl/Female
Tamil
To be invoked
Boy/Male
English
From the vegetable farm.
Boy/Male
Arabic
Lucky
Girl/Female
Hindu, Indian
Goddess Parvati; One who Resides in Vindhays
Boy/Male
Arabic, Australian
Servant of the Leader
Girl/Female
American, Australian, Chinese, Danish, Dutch, French, German, Latin, Swedish
Child Born at Christmas; The Birthday of Christ; Christ's Birthday; Form of Natalie
Boy/Male
Muslim
Tree like Pine.
Surname or Lastname
English
English : variant spelling of Charley.
RELATION DATABASE
RELATION DATABASE
RELATION DATABASE
RELATION DATABASE
RELATION DATABASE
n.
A monastic or religious order subject to a regulated mode of life; the religious state; as, to enter religion.
n.
Exposure to the free action of the air; airing; as, aeration of soil, of spawn, etc.
n.
The act or process of relaxing, or the state of being relaxed; as, relaxation of the muscles; relaxation of a law.
n.
The carrying back, and giving effect or operation to, an act or proceeding frrom some previous date or time, by a sort of fiction, as if it had happened or begun at that time. In such case the act is said to take effect by relation.
n.
A relative; a relation.
n.
The state of being related or of referring; what is apprehended as appertaining to a being or quality, by considering it in its bearing upon something else; relative quality or condition; the being such and such with regard or respect to some other thing; connection; as, the relation of experience to knowledge; the relation of master to servant.
n.
The act of relating or telling; also, that which is related; recital; account; narration; narrative; as, the relation of historical events.
n.
The quality or state of being irrelative; want of connection or relation.
a.
Having relation or kindred; related.
n.
The act of a relator at whose instance a suit is begun.
a.
Indicating or specifying some relation.
a.
Having relation or reference; referring; respecting; standing in connection; pertaining; as, arguments not relative to the subject.
n.
Corresponding relation.
n.
Connection by consanguinity or affinity; kinship; relationship; as, the relation of parents and children.
n.
A person connected by cosanguinity or affinity; a relative; a kinsman or kinswoman.
a.
Indicating or expressing relation; refering to an antecedent; as, a relative pronoun.
a.
Not relative; without mutual relations; unconnected.
n.
One who, or that which, relates to, or is considered in its relation to, something else; a relative object or term; one of two object or term; one of two objects directly connected by any relation.
a.
Arising from relation; resulting from connection with, or reference to, something else; not absolute.
n.
A person connected by blood or affinity; strictly, one allied by blood; a relation; a kinsman or kinswoman.