Technology, science and the universe
Uninterruptible
The term 'uninterruptible' refers to a state in which a process in a computing environment cannot be interrupted until it completes its execution. This concept is fundamental in real-time systems…
Physical and Earth sciencesUninterruptible Power Supply (UPS)
An Uninterruptible Power Supply (UPS) is a device designed to provide backup power to electrical systems in the event of a power failure. Its primary function is to ensure that critical equipment…
Data and analyticsUNION
The 'UNION' operation in the context of database management is a fundamental technique in SQL that allows combining the results of two or more queries into a single result set. This operation is…
Data and analyticsUNION ALL
The SQL operation 'Union All' (UNION ALL) is a fundamental tool in Structured Query Language (SQL) that allows combining the results of multiple SELECT statements into a single result table. Unlike…
Data and analyticsUNION ALL VIEW
A union all view in SQL is a tool that allows combining the results of multiple queries into a single result table. Unlike the standard union operation, which removes duplicates, the union all view…
Web and e-commerceUnionPay
UnionPay is a Chinese financial services corporation that provides a card scheme and payment processing services. Founded in 2002, UnionPay has become one of the leading players in the payment sector…
Data and analyticsUNION TYPE
A union type is a data type that allows storing multiple data types in a single variable. Unlike primitive data types, which are specific and limited, union types offer greater flexibility by…
Data and analyticsUNION VIEW
A UNION VIEW in SQL is a powerful tool that allows combining data from multiple result sets into a single result set. This technique is fundamental in managing relational databases, where data is…
Life sciencesUniparental disomy
Uniparental disomy is a genetic condition in which both copies of a chromosome come from a single parent, rather than receiving one copy from each parent, as is typical. This anomaly can lead to…
Hardware, electronics and roboticsUnipolar
Unipolar refers to having a single pole or extremity, a concept that applies in various areas of electronics, especially in circuits and devices. In the context of electronics, a unipolar device is…
Hardware, electronics and roboticsUnipolar Stepper Motor
The unipolar stepper motor is a type of electric motor characterized by having a single winding per phase, allowing it to operate efficiently in applications requiring precise control of position and…
Operating systemsUnipolar Transistor
The unipolar transistor is a semiconductor device that uses only one type of charge carrier, either electrons or holes, for its operation. Unlike bipolar transistors, which employ both electrons and…
Hardware, electronics and roboticsUniprocessor
A uniprocessor system is a type of computing architecture that has a single central processor (CPU) responsible for executing all tasks and processes of the system. In this model, tasks are executed…
Life sciencesUniprot
UniProt is a comprehensive database that provides information on protein sequences and functions. Its main goal is to offer an accessible and reliable resource for researchers in the fields of…
CybersecurityUnique
The term 'unique' refers to a resource or identifier that is distinct and not duplicated. In the context of databases and programming, uniqueness is a fundamental principle that ensures each entry or…
Blockchain and Web3Unique Address
A unique address in blockchain refers to a specific address that is not reused and is associated with a single user or transaction. This concept is fundamental in the realm of cryptocurrencies and…
Data and analyticsUNIQUE CONSTRAINT
The unique constraint is a rule in databases that ensures the uniqueness of values in a specific column of a table. This means that duplicate values are not allowed in that column, which is crucial…
Data and analyticsUNIQUE CONSTRAINT NAME
The unique constraint name in a database refers to the designation given to a constraint that ensures that values in a column or a set of columns are unique across the table. This means that records…
Data and analyticsUNIQUE IDENTIFIER
A unique identifier is a unique value used to identify a specific record in a database. This concept is fundamental in database design, as it allows each entry to be distinguished unequivocally…
Data and analyticsUNIQUE INDEX
The Unique Index is a data structure used in relational databases that ensures the uniqueness of values in a specific column. This means that duplicate values cannot be inserted into that column…
Data and analyticsUNIQUE KEY
The Unique Key is a field or combination of fields that uniquely identifies a record in a table within a database. Its main function is to ensure data integrity by preventing duplicate records and…
Data and analyticsUNIQUE ROW
A unique row in an SQL table refers to an entry that is uniquely identified by a key, commonly known as a primary key. This key is an attribute or a set of attributes that ensures that each row in…
Web and e-commerceUnique Selling Proposition (USP)
The Unique Selling Proposition (USP) is a marketing concept that refers to the unique benefit or characteristic that makes a product stand out from its competitors. This proposition is fundamental…
Society and cultureUnison
Unison refers to the simultaneous exercise of an action or the pronunciation of a speech, where multiple voices or elements align in the same tone or rhythm. This concept applies in various…