A Kubernetes-generated string is used to identify objects in a unique manner. Each object that is created throughout the entire lifespan of a Kubernetes cluster has a unique UID. This UID is designed to differentiate between similar entities that may have occurred at different times in the past.

https://kubernetes.io/docs/reference/glossary/?all=true external-link

Ulta High Frequency

A frequency range from 0.3 GHz to 3 GHz is used for terrestrial television broadcasting, mobile communications, and WLAN, among other applications.

https://it-gipfelglossar.hpi-web.de/uhf/ external-link

Unbundling (in the energy market)

Unbundling in the energy market refers to the splitting of functions within the energy value chain. The main objective is to make the network operator independent of other activities in the energy supply and to promote competition. This gives third parties fair access to the network and at the same time prevents network operators from exploiting their monopoly position, for example through cross-subsidization in sales.

https://it-gipfelglossar.hpi-web.de/unbundling-im-energiemarkt/ external-link

Universal Asynchronous Receiver Transmitter

UART enables the implementation of serial interfaces in embedded systems such as M2M systems. These interfaces are used for communication with peripheral devices such as sensors, actuators, or radio modules.

https://it-gipfelglossar.hpi-web.de/uart/ external-link

Universal Description, Discovery and Integration

It is a directory service with a web interface. It contains information about companies, their data, and their services. In UDDI, this information can be categorized into three types: "White Pages" as a kind of telephone directory, "Yellow Pages" as the electronic version of the Yellow Pages, and "Green Pages" for interface descriptions.

https://it-gipfelglossar.hpi-web.de/uddi/ external-link

Universal Mobile Telecommunications System

In this third-generation mobile communication standard, significantly higher data transmission rates of up to 7.2 Mbit/s are possible compared to the GSM standard.

https://it-gipfelglossar.hpi-web.de/umts/ external-link

Universal service

Under the Telecommunications Act (TKG), universal service is a basic service defined by law in which the entire population of a country is guaranteed a specific service, such as telephony.

https://it-gipfelglossar.hpi-web.de/universaldienst/ external-link

Unstructured data

Unstructured data refers to diverse types of information that do not adhere to conventional data models, thereby presenting challenges in storing and managing them within a standard relational database framework.

https://www.techtarget.com/searchbusinessanalytics/definition/unstructured-data external-link

Upstream (disambiguation)

The term "upstream" can have different meanings depending on the context. It can refer to the core Kubernetes codebase or the source repository from which another repository was forked. Within the Kubernetes community, "upstream" typically refers to the core Kubernetes codebase that serves as the foundation for other tools and code in the ecosystem. Community members may suggest moving a feature upstream, which means incorporating it into the core codebase instead of relying on a plugin or third-party tool. In GitHub or git, "upstream" conventionally refers to the source repository, while the forked repository is considered downstream.

https://kubernetes.io/docs/reference/glossary/?all=true external-link

Usage Contract

Set of conditions and rules corresponding to one or more transactions in the IDS

https://github.com/International-Data-Spaces-Association/IDS-G/tree/main/Glossary external-link

Usage Control

Usage control is focused on setting and enforcing limitations on how data can (or cannot) be handled, rather than controlling data access. Its main objective is to regulate data processing requirements, known as obligations. In contrast to access control, which deals with granting or denying access to data, usage control comes into play after access has been granted, with the goal of ensuring that data usage restrictions are adhered to. The ultimate aim of usage control is to link policies to the data being shared.

https://gaia-x.gitlab.io/glossary/ external-link

Usage Plane

One of the three levels of interoperability represented by the Gaia-X framework is captured by its three planes, which includes technical interoperability, specifically between different Service Offerings.

https://gaia-x.gitlab.io/glossary/ external-link

Usage Policy

A set of regulations outlined by the Data Owner that limits the usage of their data, including factors such as time-to-live and forwarding conditions such as anonymization or scope of usage. These rules are transmitted along with the data and are enforced while the data resides on the Data Consumer's Connector.

https://github.com/International-Data-Spaces-Association/IDS-G/tree/main/Glossary external-link

Use Case / Usecase

The term refers to a concept within the IT sector used to describe requirements for a software system.

https://it-gipfelglossar.hpi-web.de/use-case/ external-link

Use Case Development

The process of enhancing a data space's value by encouraging the creation, support, and expansion of various use cases.

https://dssc.eu/space/Glossary/176553985/DSSC+Glossary+%7C+Version+2.0+%7C+September+2023 external-link

Use Case Orchestrator

A participant in a data space who oversees and is responsible for a particular use case within the governance framework. This entity establishes and ensures adherence to business rules and conditions for the use case participants.

https://dssc.eu/space/Glossary/176553985/DSSC+Glossary+%7C+Version+2.0+%7C+September+2023 external-link

Use Case Participant

A member of a data space actively involved in a specific use case, possibly fulfilling multiple roles within it.

https://dssc.eu/space/Glossary/176553985/DSSC+Glossary+%7C+Version+2.0+%7C+September+2023 external-link


A participant in the Gaia-X ecosystem can be an individual, entity or organization that uses services provided by Gaia-X to connect their applications within the ecosystem.

https://www.gxfs.eu/de/glossar/ external-link

User and Role management

Enables customers to manage user accounts that have access to the User Interface, including the ability to invite, update, and remove user accounts. Customers can also define which users are authorized to perform specific functions.

Telekom Data Intelligence Hub

User Datagram Protocol

The User Datagram Protocol (UDP) is a communication protocol designed primarily for creating connections between internet applications that prioritize low latency and tolerate data loss.

https://www.techtarget.com/searchnetworking/definition/UDP-User-Datagram-Protocol external-link

User defined function

In the world of programming, user-defined functions (UDFs) reign as essential elements. They serve as the main tool for programmers to create applications with reusable code. In this realm, where the majority of code comes from the user or programmer, user-defined functions take center stage in program composition, punctuated occasionally by built-in functions.

https://www.techopedia.com/definition/3888/user-defined-function-udf external-link

User interface

Configuring the data transformation process using a browser-based User Interface.

Telekom Data Intelligence Hub

User Namespace

User namespaces are a Linux kernel feature that enables a non-root user to simulate superuser privileges, also known as "rootless containers." This feature is particularly useful for running containers without requiring superuser access outside of the container. By utilizing user namespaces, potential damage caused by container break-out attacks can be mitigated. It's important to note that the term "namespace" in the context of user namespaces refers to a Linux kernel feature, and should not be confused with namespaces in the context of Kubernetes.

https://kubernetes.io/docs/reference/glossary/?all=true external-link