Data Distribution System --> Other Data Distribution Systems:
data query

This triple is bi-directional. See also Other Data Distribution Systems --> Data Distribution System: data query

Definitions

data query (Information Flow): Data query includes those dialogs necessary to determine what data is available for and also submit a query for near-term response.

Data Distribution System (Source Physical Object): The 'Data Distribution System' collects, processes, and distributes ITS data, connecting data producers with data consumers and facilitating data exchange.

Other Data Distribution Systems (Destination Physical Object): Representing another Data Distribution System, 'Other Data Distribution Systems' is intended to provide a source and destination for information exchange between peer (e.g. inter-regional) data distribution systems. It supports modeling of projects or regions that include multiple interconnected data distribution systems that together manage data distribution in the connected vehicle environment.

Included In

This Triple is in the following Service Packages:

This triple is associated with the following Functional Objects:

This Triple is described by the following Functional View Data Flows:

This Triple has the following triple relationships:

None

Communication Solutions

Solutions are sorted in ascending Gap Severity order. The Gap Severity is the parenthetical number at the end of the solution.

Selected Solution

Data for Distribution (TBD) - Apache Kafka

Solution Description

This solution is used within Canada and the U.S.. It combines standards associated with Data for Distribution (TBD) with those for Apache Kafka. The Data for Distribution (TBD) standards include a placeholder for upper-layer standards necessary to define the data (elements and structures) necessary to complete a solution for the information flow based on data distribution technologies. The data standard will need to include a specific customization for the desired data distribution technology used (e.g., Kafka, DDS, etc.).. The Apache Kafka standards include lower-layer open source code that supports data distribution of specific types of data.

ITS Application Entity
Mind the gapMind the gap

Development needed
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Mgmt

Apache Zookeeper
Facilities
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Apache Kafka
Apache Zookeeper
Security

IETF RFC 8446
TransNet

IP Alternatives
IETF RFC 9293
Access

Internet Subnet Alternatives
TransNet TransNet

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Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.

Characteristics

Characteristic Value
Time Context Recent
Spatial Context Regional
Acknowledgement True
Cardinality Unicast
Initiator Source
Authenticable True
Encrypt True


Interoperability Description
Regional Interoperability throughout the geopolitical region is highly desirable, but if implemented differently in different transportation management jurisdictions, significant benefits will still accrue in each jurisdiction. Regardless, this Information Flow Triple should be implemented consistently within a transportation jurisdiction (i.e., the scope of a regional architecture).

Security

Information Flow Security
  Confidentiality Integrity Availability
Rating High Moderate Moderate
Basis Query flows imply the interests of the source. Observation of this information betrays the privacy of the requestor. Depending on the type of requestor and type of Query flows imply the interests of the source. Observation of this information betrays the privacy of the requestor. Depending on the type of requestor and type of information requested, this could be MODERATE.information requested, this could be MODERATE. Query flows create long term relationships between source and DDS, and dictate what information the source receives. Corruption of this flow could have a significant impact on data reception; however, re-query should be a fairly simply process, justifying MODERATE and not HIGH. Query flows need some level of abailability; if the flow is not satisifed the user may be become frustrated and seek a solution other than DDS. Thus MODERATE.


Security Characteristics Value
Authenticable True
Encrypt True