GESMES/TS

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GESMES/TS (GEneric Statistical MESsage for Time Series) is a data model and message format appropriate for performing standardised exchange of statistical data and related metadata. It is based on the GESMES message (a UN/CEFACT standard using the EDIFACT syntax). Its most common use is in the exchange of official statistics.

Data model abstract model for organizing data; abstract model that organizes elements of data and standardizes how they relate to one another and to properties of the real world entities

A data model is an abstract model that organizes elements of data and standardizes how they relate to one another and to properties of the real world entities. For instance, a data model may specify that the data element representing a car be composed of a number of other elements which, in turn, represent the color and size of the car and define its owner.

Statistics study of the collection, organization, analysis, interpretation, and presentation of data

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Metadata data about data

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The data model is optimised to represent multi-dimensional arrays of floating point numerical data where one dimension is time. The essential design pattern resembles a star schema. GESMES/TS promotes automation by its ability to explicitly declare the dimensions and allowable metadata fields in a standardised way. Software can then translate these declarations into a database schema suitable to hold the multi-dimensional data. This mechanism makes GESMES/TS versatile enough for efficient use in many domains.

In computing, the star schema is the simplest style of data mart schema and is the approach most widely used to develop data warehouses and dimensional data marts. The star schema consists of one or more fact tables referencing any number of dimension tables. The star schema is an important special case of the snowflake schema, and is more effective for handling simpler queries.

A dimension is a structure that categorizes facts and measures in order to enable users to answer business questions. Commonly used dimensions are people, products, place and time...

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The initial name of GESMES/TS was GESMES/CB (GEneric Statistical MESsage for Central Banks), but has been changed in order to reflect its wider application. The model and format are maintained under the auspices of the SDMX initiative. In this context, GESMES/TS is known as SDMX-EDI.

SDMX, which stands for Statistical Data and Metadata eXchange is an international initiative that aims at standardising and modernising (“industrialising”) the mechanisms and processes for the exchange of statistical data and metadata among international organisations and their member countries.

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