Glossary

The glossary includes definitions for terms which are commonly used here, and that are part of the DDS and RTI lexicon.

Discovery is the process by which a DomainParticipant learns about other DomainParticipants, DataWriters, and DataReaders within the same domain. The discovery process includes: Detection of new entities in the domain Detection that entities have shut down cleanly Detection that entities have timed
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Represents a global data space. It is a logical scope (or "address space") for Topic and Type definitions. Each Domain is uniquely identified by an integer domain ID . Domains are completely independent from each other. For two DDS applications to communicate with each other they must join the same
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A DomainParticipant is the DDS Entity used by an application to join a DDS Domain . It is the first DDS Entity created by an application and serves as a factory for other DDS Entities . A DomainParticipant can join a single DDS Domain . If an application wants to join multiple DDS domains, then it
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Entity is a general term for a DomainParticipant, Publisher, Subscriber, DataWriter, DataReader or Topic. Entity is an interface defined in the OMG DDS specification, with the following characteristics: Configured using a QosPolicy Accepting a Listener Accepting a StatusCondition This is the base
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A DDS Flow Controller is an object that allows the application to shape the network traffic created by one or more DataWriters . Applications install Flow Controller objects on the DomainParticipant . Each Flow Controller is independent of the other and regulates the traffic of all the DDS
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An instance is a unique element within a Topic, described by unique values of key fields . Instances represent individual real-world objects within a single data stream. For example, you can represent individual radar tracks within a single "TrackData" topic, or individual components of a wind
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IoT (Internet of Things) ... we are working on producing content for this glossary entry, but wanted to provide you with some relevant links in the meantime. Stay tuned for what's to come! Additional Information on this Topic from RTI RTI - The Internet of Things ( rti.com/iot ) A Day in Your Life
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