What is a data marketplace?

A data marketplace (or data mart) is an online portal or website where data can be easily found and shared.

Although the name indicates that data is only bought and sold via a Data Marketplace, other data can also be made available such as Open Data (free to use, re-use or redistribute) or Shared Data (limited by license or end-usage).

Data marketplaces typically offer various types of data for different markets and from different sources. Making them a focal point for providing and accessing information about specific sectors or industries.

There can be a wide range of data formats and technologies provided via Data Marketplaces. However the widespread adoption of APIs for integration has meant that these are often the chosen modern way of publishing data sources now.

Transport & mobility - data quality

Lately I have been looking at data quality in the transport & mobility sector.

Helpfully UK Gov has 6 "Core data quality dimensions":

1. Completeness
describes the degree to which records are present

2. Uniqueness
describes the degree to which there is no duplication in records

3. Consistency
describes the degree to which values in a data set do not contradict other values representing the same entity

4. Timeliness
describes the degree to which the data is an accurate reflection of the period that they represent (and that the data and its values are up to date)

5. Validity
describes the degree to which the data is in the range and format expected

6. Accuracy
describes the degree to which data matches reality

These terms are use across UK Gov and were created with the UK Data Management Association https://www.dama-uk.org/

More info here: https://www.gov.uk/government/publications/the-government-data-quality-framework/the-government-data-quality-framework