IREF142227false2021-06-13T19:57:04ZSDMX Concept Scheme for Concept RolesA concept role gives a particular context to a concept for easy and systematic interpretation by machine processing and visualization tools. For example, the concepts REPORTING_AREA and COUNTERPART_AREA are different concepts but they are both geographical characteristics, therefore they can be associated with the same concept role ID: “GEO”. This allows visualization systems to interpret these concepts as geographical data in order to generate maps. For any question, comment or correction, feel free to contact the SDMX Statistical Working Group (SWG) at the following address: swg@sdmx.org.CONTEXTIdentifies the subject to whom the data refers (e.g. the reporting agent for primary reporting, the country for secondary reporting). Note: This concept role has been included for compatibility with SDMX 2.0.EntityDescribes the subject of the data set (e.g. a country).CONTEXTAllows to display flags close to the observation value or partial key in statistical tables. Examples of qualitative information that can be exchanged via a flag are "estimated value", "break in series", “confidential”.FlagCoded attribute in a data set that represents qualitative information for the cell or partial key (e.g. series) value.CONTEXTIdentifies the observation's time interval for processing and/or presenting on a graph's time axis. For example, if a data series has a constant time interval between its observations, this interval determines the frequency of the series (e.g. monthly, quarterly, yearly). “Frequency” - also called “periodicity” - may refer to several stages in the production process, e.g. in data collection or in data dissemination. (e.g., a time series could be available at annual frequency but the underlying data are compiled monthly). Therefore, “Frequency” can be broken down into “Frequency - data collection” and “Frequency - data dissemination”. Note: This concept role has been included for compatibility with SDMX 2.0.FrequencyTime interval at which the source data are collected.CONTEXTUsed for concepts which refer to geographical or political groups of countries or regions within a country. It can allow for the representation of geographical information on maps or graphs.GeographicalGeographic area to which the measured statistical phenomenon relates.CONTEXTAllows systems to distinguish operation concepts from other concepts (entities, variables) which may be prioritised differently in navigation, presentation and processing. An example is to indicate that this concept codes information such as seasonal adjustment or time transformations.Statistical operationSignifies statistical operations have been done on the observations.CONTEXTUsed to distinguish concepts that represent statistical variables (e.g. sex, age) from concepts that are strictly related to the operation performed over data (e.g. Adjustment). This identification of this concept is crucial for statisticians as it is very important in survey data to identify variables. For example, in a DSD representing the GDP of a country we will have the reference area, the unit of measure of the GDP and the value of the GDP. The unit of measure is a concept used to understand or interpret data but it is not a statistical variable, which are reference area and the GDP observed value. The concept of variable is emphasized strongly in GSIM but not in SDMX, and the inclusion of this information as a Concept role, incorporates this information into SDMX.VariableCharacteristic of a unit being observed that may assume more than one of a set of values to which a numerical measure or a category from a classification can be assigned.