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Concept in relational database design
relational 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
Cryptographic key management scheme
Unique Key Per Transaction (DUKPT) is a key management scheme in which for every transaction, a unique key is used which is derived from a fixed key.
Derived unique key per transaction
Derived_unique_key_per_transaction
Mechanical or electronic fastening device
or set of locks that are keyed alike, a lock/key system where each similarly keyed lock requires the same, unique key. The key serves as a security token
Lock_and_key
128-bit number used to identify information in computer systems
A universally unique identifier (UUID) is a 128-bit number used to identify information in computer systems. The term globally unique identifier (GUID)
Universally_unique_identifier
Topics referred to by the same term
Look up key or Keys in Wiktionary, the free dictionary. Key, Keys, The Key or The Keys may refer to: Key (cryptography), a piece of information needed
Key
Relational databases concept
unique attribute or combination of attributes from the table (a natural key) to act as its primary key, or create a new attribute containing a unique
Primary_key
Type of unique key in a database
A natural key (also known as business key or domain key) is a type of unique key in a database formed of attributes that exist and are used in the external
Natural_key
Standard for content distribution and digital rights management
encryption scheme (AES-G) to produce the Volume Unique Key (Kvu). The Kvu is used to decrypt the encrypted title keys, and that is used to decrypt the encrypted
Advanced Access Content System
Advanced_Access_Content_System
SQL statement that returns a result set of rows from one or more tables
numbers assigned to any rows where sort_key is the same. When sort_key is unique, each row will always get a unique row number. The RANK() OVER window function
Select_(SQL)
Candidate key with two or more attributes in a database
database design, a composite key is a candidate key that consists of two or more attributes, (table columns) that together uniquely identify an entity occurrence
Composite_key
Identifier that is unique among all used identifiers
entity that serve as unique identifiers are called primary keys. In mathematics, set theory uses the concept of element indices as unique identifiers. There
Unique_identifier
Data storage paradigm
fields within them. These records are stored and retrieved using a key that uniquely identifies the record, and is used to find the data within the database
Key–value_database
Identity code for citizens and residents of Mexico
incorporated and processed in the National Database of the Unique Population Registration Key, are used as elements of support in the role of the Secretary
Unique Population Registry Code
Unique_Population_Registry_Code
Procedure in computing
transformation and update. Unique keys play an important part in all relational databases, as they tie everything together. A unique key is a column that identifies
Extract,_transform,_load
Database algorithm
Hi/Lo is an algorithm and a key generation strategy used for generating unique keys for use in a database as a primary key. It uses a sequence-based hi-lo
Hi/Lo_algorithm
Unique identifier for either an entity in the modeled world or an object in the database
surrogate key (or synthetic key, pseudokey, entity identifier, factless key, or technical key[citation needed]) in a database is a unique identifier
Surrogate_key
Digital database whose organization is based on the relational model of data
in a table has its own unique key. Rows in a table can be linked to rows in other tables by adding a column for the unique key of the linked row (such
Relational_database
Type of data storage mechanism
generate the same key, CAS systems ensure that the files within them are unique, and because changing the file will result in a new key, CAS systems provide
Content-addressable_storage
Topics referred to by the same term
applications, see hash function or unique key This disambiguation page lists articles associated with the title Hash key. If an internal link incorrectly
Hash_key
Structure in data warehousing
natural key and Supplier_Key is a surrogate key. Technically, the surrogate key is not necessary, since the row will be unique by the natural key (Supplier_Code)
Slowly_changing_dimension
2005 studio album by Ol' Dirty Bastard
A Son Unique is the only unreleased studio album by Ol' Dirty Bastard, originally meant to be his third album. It was supposed to be released as his third
A_Son_Unique
Indian national identification number
Aadhaar is a twelve-digit unique identity number that can be obtained voluntarily by all residents of India based on their place of residence, biometrics
Aadhaar
Mathematical concept
databases as a surrogate key for registering and identifying unique entries in a table (in which case it is used as a primary key). Historically, the Norwegian
Sequence_number
Level of database normalisation
are in 3NF by definition. This happens when there is more than one unique compound key and they overlap. Such cases can cause redundant information in the
Elementary_key_normal_form
Data structure holding key/value pairs
value must be associated with a unique key, and a second lookup operation takes a value as an argument and looks up the key associated with that value. The
Associative_array
Event in cryptography
public-key cryptography and computer security, a root-key ceremony is a procedure for generating a unique pair of public and private root keys. Depending
Key_ceremony
Security protocol for wireless computer networks
and 128-bit keys, combining user-configurable and factory-set bits. WEP uses the RC4 algorithm for encrypting data, creating a unique key for each packet
Wi-Fi_Protected_Access
Identifier for authenticating with an API
An application programming interface (API) key is a secret unique identifier used to authenticate and authorize a user, developer, or calling program to
API_key
Type of information search procedure
Reverse lookup is a procedure of using a value to retrieve a unique key in an associative array. Applications of reverse lookup include reverse DNS lookup
Reverse_lookup
Method of network communication where requests are sent by the publisher
on the server with a unique key (e.g., a UUID or Apple Device Token). The server then transmits the message against the unique key to deliver it to the
Push_technology
Computer password or cryptographic key
to a key derivation function to produce one or more keys to use for encryption and/or MACing of messages. To make unique session and message keys the shared
Shared_secret
and upper case letters to encode email addresses with a unique key. The concept is that CaseKeys software is installed on either the client PC or the mail
Geobytes
Feature on firearms to prevent accidental discharge
a mandatory integral locking mechanisms that must be deactivated by a unique key before the gun can be fired. These integral locking mechanisms are intended
Safety_(firearms)
Open source distributed memory caching system
data The client would first check whether a Memcached value with the unique key "userrow:userid" exists, where userid is some number. If the result does
Memcached
Group of standard library class templates
set of unique keys) with vector as the default underlying container. std::flat_map<K, V> implements a "flat map" (stores a sorted set of unique key-value
Sequence_container_(C++)
Vertical measurement of the independence of a summit
It is a measure of the independence of a summit. The key col ("saddle") around the peak is a unique point on this lowest contour line. The parent peak (if
Topographic_prominence
Optical disc copyright protection system
own keys, unique for each model, called Device Keys. These keys are conceded by the AACS LA. In the moment of the reproduction, one of these keys will
Media_Key_Block
Individual claim that differentiates a product or service
In marketing, the unique selling proposition (USP), also called the unique selling point or the unique value proposition (UVP) in the business model canvas
Unique_selling_proposition
Cloud-based NoSQL database service
strings encoded in standard GeoJSON fragments Containers can also enforce unique key constraints to ensure data integrity. Each Cosmos DB container exposes
Cosmos_DB
2003 heist in Antwerp, Belgium
break open 109 of the 189 safe deposit boxes, each equipped with both a unique key lock and a three-letter combination lock. After the robbery, the group
Antwerp_diamond_heist
Keyboard modifier key
Alt key, which means that ThinkPad keyboards now generally have larger left Control keys than those of many other manufacturers, and are unique in preserving
Fn_key
Database using graph structures for queries
a smaller sub-table, containing only the selected data and a unique key (or primary key) of the record. If the phone numbers are indexed, the same search
Graph_database
Key of Advanced Access Content System
of this process, the Media Key, is obtained. The Media Key is combined with the VID (Volume ID) and the Volume Unique Key (KVU) is originated so that
Encrypted_Title_Key
American singer and songwriter (born 1981)
musician and singer-songwriter with a unique style blending R&B, pop, hip-hop, and soul. The Times wrote that Keys's debut album, Songs in A Minor, "spoke
Alicia_Keys
Italian novel series
Doors of Time and their keys. There are several Doors of Time spread around the village, and each door requires its own unique key to open it. Once opened
Ulysses_Moore
Replacement of lock pins to allow usage of a new key
different combinations to create relatively unique key bitting. Most keys have 5 cuts from bow to tip. If a key has 5 cuts, the lock has 5 pins. Different
Rekeying
Postal and delivery service address coding element
can share the same routing key. A routing key coupled with a unique identifier looks like this: This corresponds to the unique address of Terenure Post
List of Eircode routing areas in Ireland
List_of_Eircode_routing_areas_in_Ireland
AACS decryption software
these keys. The title keys are stored on the disc and themselves encrypted with another key called the volume unique key. The volume unique key for any
BackupHDDVD
Distributed database
provisioned. NoSQL Database supports tabular model. Each row is identified by a unique key, and has a value, of arbitrary length, which is interpreted by the application
Oracle_NoSQL_Database
Designated character in a GUI to jump directly to or activate a widget
rather visual ability to clearly indicate which unique key to press (commonly in conjunction with the Alt key) to trigger a designated operation or navigate
Mnemonics_(keyboard)
Input device
two keys are pressed simultaneously. If diodes are used, then the number of unique keys detectable is doubled. Arrow keys Keyboard (computing) Key rollover
Keypad
Name that identifies a specific entity
that identifies (that is, labels the identity of) either a unique class of objects or a unique instance of such objects; the class or instance may be an
Identifier
Revolver
Taurus implemented the inbuilt keylock in 1997; it is activated with a unique key. The firing mechanism incorporates a transfer bar that assures the firing
Taurus_Model_605
Database class for storage and retrieval of modeled data
binary forms like BSON. Documents are addressed in the database via a unique key that represents that document. Another defining characteristic of a document-oriented
NoSQL
American lock manufacturer
also allows 2 different offsets to the pin. The theoretical number of unique key combinations is over two million when using a lock with six pins, six
Medeco
Secure communication method
and unique property of QKD is the ability of the two communicating users to detect the presence of any third party trying to gain knowledge of the key. This
Quantum_key_distribution
Programming technique for resolving duplicate hash values in a hash table data structure
static case, we are given a set with a total of x entries, each one with a unique key, ahead of time. Fredman, Komlós and Szemerédi pick a first-level hash
Dynamic_perfect_hashing
Topics referred to by the same term
gear of a steam locomotive Reverse lookup, using a value to retrieve a unique key in an associative array Reverse telephone directory Reverse DNS lookup
Reverse
Computer software
A unique key may contain NULL values since they are by definition a unique non-valued value. Primary key – Primary key are much like unique keys except
Virtuoso_Universal_Server
Type of lock mechanism using wards to prevent wrong key insertion
applications. There are also a very limited number of unique keys that can be created, so many keys will be able to open other doors that they were not
Warded_lock
Field in databases
@ID = @@Identity Update Contacts Set Phone = 'XXX-YYY-ZZZZ' Where ContactID = @ID Surrogate key Unique key MSDN Article "Managing Identity" [dead link]
Identity_column
IBM disk file programming interface
supported by VSAM. Each record in a KSDS data file is embedded with a unique key. A KSDS consists of two parts, the data component and a separate index
Virtual_Storage_Access_Method
Temporary cryptographic key
cryptographic key that is generated for each execution of a key-establishment process and that meets other requirements of the key type (e.g., unique to each
Ephemeral_key
Communication protocol for cryptographic keys
Link attributes containing the other object's unique identifier. Certificates and PGP Keys. Split Keys, with each split being a distinct object that can
Key Management Interoperability Protocol
Key_Management_Interoperability_Protocol
Model or diagram describing interrelated things
database tables, database indexes such as unique key indexes, and database constraints such as a foreign key constraint or a commonality constraint. The
Entity–relationship_model
persistent object identifier (POID) is a unique identifier of a record on a table, used as the primary key. Important characteristics of a POID are that
Persistent_object_identifier
Product activation mechanism for Microsoft Windows
recognizes their own unique keys. Windows 8 will install on any UEFI motherboard containing a valid encrypted Microsoft product key since a royalty has
System Locked Pre-installation
System_Locked_Pre-installation
System for establishing wireless connection
secret 64-bit WEP key known to both devices. Key Generation Phase: With both devices connected, the AP generates and transfers a unique key to the client
AOSS
Cluster of keys on a computer keyboard
mouse pointer. Specific kinds of software make use of the arrow keys in more unique ways: they are used in most media player software to skip backward
Arrow_keys
2026 American film
and Jamie King, and stars Cristin Milioti, Topher Grace, Keegan-Michael Key, Michael Shannon (in a dual role), and Patton Oswalt. In the film, a group
Buddy_(2026_film)
Measure of similarity and diversity between sets
total unique keys all_keys = unique_keys(vector_A.keys() + vector_B.keys()) for key in all_keys: val_a = vector_A.get(key, 0) val_b = vector_B.get(key, 0)
Jaccard_index
Type of computer program
retrieved using a unique key, and all related information is returned together, without needing to look up multiple tables. A key difference between
Document-oriented_database
Binary operation in relational algebra
would represent a table such that every Student (because Student is the unique key / attribute of the Completed table) is combined with every given Task
Join_(relational_algebra)
Electronic identifier embedded in an audio signal
a unique key to decrypt a media key block present on the disc. If a DVD-Audio player encounters the audio watermark on a disc without a media key block
Audio_watermark
Coral cay archipelago in Florida, United States
to unique animal species, including the American crocodile, Key deer (protected by the National Key Deer Refuge), and the Key Largo woodrat. The Keys are
Florida_Keys
Topics referred to by the same term
abbreviation for Ljudevit Vukotinović (1813–1893), Croatian naturalist Volume Unique Key, in the AACS encryption system from the 2000s Value Up Kit Vertical up-kicker
Vuk
Set of 24 pieces in major and minor keys
cover only the 12 major keys or the 12 minor keys; or only the flat keys (Franz Liszt's Transcendental Études) or the sharp keys (Sergei Lyapunov's Op.
Music written in all major or minor keys
Music_written_in_all_major_or_minor_keys
2017 edition of the C++ programming language standard
2014-11-29. Retrieved 2014-11-15. "N4279: Improved insertion interface for unique-key maps (Thomas Köppe)". Archived from the original on 2015-04-27. Retrieved
C++17
other applications. unique An element that is different from other elements. Database records are kept separate using unique keys. A set guarantees that
Glossary_of_computer_science
Finding a maximal unique match (MUM) is part of a key step in the multiple sequence alignment of genomes in computational biology. Identification of MUMs
Maximal_unique_match
Hash function that is suitable for use in cryptography
generate the same key, CAS systems ensure that the files within them are unique, and because changing the file will result in a new key, CAS systems provide
Cryptographic_hash_function
Imsi catcher
- is a removable subscriber identification token storing the IMSI, a unique key shared with the mobile network operator and other data. In a mobile phone
Mobile_station
Term in relational and entity–relationship theory
table to their own tables. Many-to-many (data model) Relational database Unique key Hoffer, Jeffrey A.; Prescott, Mary B.; McFadden, Fred R. (2004). Modern
Associative_entity
Abstract data type in computer science
make the skip list lock-free. The nodes of the skip list consists of a unique key, a priority, an array of pointers, for each level, to the next nodes and
Priority_queue
Associative array for storing key–value pairs
array stores a set of (key, value) pairs and allows insertion, deletion, and lookup (search), with the constraint of unique keys. In the hash table implementation
Hash_table
Identifier for a taxpaying entity in the United States
identification number (PIN) Primary key Serial number Single version of the truth Surrogate key Transaction authentication number Unique identifier (UID) UID (disambiguation)
Taxpayer Identification Number
Taxpayer_Identification_Number
Novel by Neil Gaiman
who killed her family, for a price. She and her company must retrieve a unique key from the Black Friars and bring it to the angel. The two return to the
Neverwhere_(novel)
EEPROM chip
added (mod 2) to the unique key in the machine, thus leaving it stored in encrypted form. When it is reattached, the unique key in the machine is decrypted
KSD-64
Algorithm that arranges lists in order
the assumption that the key size is large enough that all entries have unique key values, and hence that n ≪ 2k, where ≪ means "much less than". In the
Sorting_algorithm
Data structure
inserted for every unique key stored, making PATRICIA much more compact than a standard binary trie. Also, since the actual keys are no longer explicitly
Radix_tree
Norwegian engineer and politician (1925–2017)
recodable keycard lock, where each new hotel guest could have their own unique key formed by a pattern of 32 holes in a plastic card. The invention is still
Tor_Sørnes
Type of unique identifier
available. Numbering scheme Serial number Symbol (programming) Unique key Universally Unique Identifier Cardinal, Ordinal and Nominal Numbers Cardinal, Ordinal
Nominal_number
Unreproducible object used in digital security
asymptotically optimal, one can extract a unique strong cryptographic key from the physical microstructure. The same unique key is reconstructed every time the
Physical_unclonable_function
Business life insurance policy on key personnel
insurance policy. Many businesses have a key person who is responsible for the majority of profits or has a unique and hard to replace skill set that is
Key_person_insurance
<type> [GENERATED ALWAYS] AS ( <expression> ) [VIRTUAL | PERSISTENT] [UNIQUE] [UNIQUE KEY] [COMMENT <text>] type is the column's data type expression is the
Virtual_column
Process of establishing confidence in user identity
shares a unique key with an authentication server. When the user sends a randomly generated message (the challenge) encrypted by the secret key to the authentication
Electronic_authentication
1952 book by R. S. R. Fitter and R. A. Richardson
the Roger Tory Peterson and other guides. It also provides Fitter's unique "key" system for identifying unfamiliar birds, first by plumage (colour),
The Pocket Guide to British Birds
The_Pocket_Guide_to_British_Birds
Web technique
with a unique key, which is the part after its top-level domain name. For example, https://tinyurl.com/m3q2xt has a key of m3q2xt, these keys are case-sensitive
URL_shortening
crypto-operation Transmission security key (TSK) Trunk encryption device (TED) Types 1, 2, 3, and 4 encryption Unique key VoIP VPN – combines voice over IP
List of telecommunications encryption terms
List_of_telecommunications_encryption_terms
Digital proof of identity
the birth certificate, including the names of the legal ascendant(s), a unique key of the Population Registry (CURP), a biometric facial recognition photograph
Electronic_identification
UNIQUE KEY
UNIQUE KEY
Girl/Female
Australian, Chinese, Dutch, Jamaican
God is My Judge
Female
English
English variant spelling of Latin Eunice, UNICE means "good victory."
Male
Spanish
 Pet form of Spanish Enrique, QUIQUE means "home-ruler." Compare with another form of Quique.
Girl/Female
Latin American
Only one.
Female
French
French form of Latin Monica, possibly MONIQUE means "advise, counsel."
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sindhi, Telugu
Unique Oneness; Unique
Boy/Male
Teutonic American Italian Spanish
Rules an estate.
Female
Welsh
Welsh name, possibly related to Greek Mnêmê, NIMUE means "memory." In Arthurian legend, this is the name of the sorceress, known as the Lady of the Lake, who stole the infant Lancelot.Â
Girl/Female
Tamil
Annjaya | அநà¯à®¨à¯à®œà®¯
Unique
Annjaya | அநà¯à®¨à¯à®œà®¯
Girl/Female
Tamil
Unique
Female
French
French form of Latin Veronica, VÉRONIQUE means "bringer of victory."
Girl/Female
American, Australian, Chinese, Danish, Dutch, French, German, Greek, Latin, Netherlands, Romanian, Swedish
Wise; Counselor; Advisor; Alone; Solitary; Nun; Similar to Mona and Madonna
Girl/Female
Greek American Latin French
Alone. Advisor.
Girl/Female
Tamil
Unique
Male
Spanish
Spanish form of Latin Henricus, ENRIQUE means "home-ruler."
Girl/Female
Hindu, Indian, Unique
Goddess Lakshmi; Requester; Unique
Girl/Female
Australian, French, Hebrew
The Lord is Gracious; Female Version of John
Girl/Female
Tamil
Unique
Boy/Male
American, Chinese, French, German, Portuguese, Spanish, Swiss, Teutonic
Estate Ruler; Ruler of the Estate; Rules his Household; Variant of Henry
Girl/Female
Tamil
Unique
UNIQUE KEY
UNIQUE KEY
UNIQUE KEY
UNIQUE KEY
UNIQUE KEY
UNIQUE KEY
UNIQUE KEY
n.
A thing without a like; something unequaled or unparalleled.
a.
Not agreeable to a rule or standard, or to duty; disproportioned; excessive; immoderate; inordinate; as, an undue attachment to forms; an undue rigor in the execution of law.
a.
Not true; false; contrary to the fact; as, the story is untrue.
a.
Hence; Unique; rare; matchless.
n.
The condition of being united; quality of the unique; unification.
a.
Old; ancient; of genuine antiquity; as, an antique statue. In this sense it usually refers to the flourishing ages of Greece and Rome.
n.
The quality or state of being unique; uniqueness.
v. t.
United; joint; as, unite consent.
a.
Being without a like or equal; unmatched; unequaled; unparalleled; single in kind or excellence; sole.
v. t.
To excite to action by causing resentment or jealousy; to stimulate; to prick; as, to pique ambition, or curiosity.
n.
See Cinque.
a.
In general, anything very old; but in a more limited sense, a relic or object of ancient art; collectively, the antique, the remains of ancient art, as busts, statues, paintings, and vases.
n.
See Caique.
a.
Old, as respects the present age, or a modern period of time; of old fashion; antiquated; as, an antique robe.
v. t.
To put together so as to make one; to join, as two or more constituents, to form a whole; to combine; to connect; to join; to cause to adhere; as, to unite bricks by mortar; to unite iron bars by welding; to unite two armies.
a.
Not due; not yet owing; as, an undue debt, note, or bond.
a.
Not right; not lawful or legal; improper; as, an undue proceeding.
v. t.
To unite.
a.
Made in imitation of antiquity; as, the antique style of Thomson's "Castle of Indolence."