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Last modified by Artur on 2025/09/10 11:19
From version 2.1
edited by Helena
on 2025/05/23 01:15
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To version 3.1
edited by Helena
on 2025/05/23 17:13
Change comment: There is no comment for this version

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29 29  (% style="text-align: center;" %)
30 30  **{{id name="image_45"/}}Figure 45: Example of some Methods of the Data Writer Interface**
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32 -As you will see the only “methods” that the database application needs to invoke are based on the constructs in the SDMX Information Model (Group key, Series Key, Observation, Attribute). Each different “implementation” of this interface will enable a database (or, indeed, any other) application to read or write an SDMX data set in a specific type of data set message (e.g. SDMX-ML generic, SDMX-ML DSD-specific, SDMX-EDI). The important, and only, thing to understand from the Interface specification is that the database application never changes, no matter what is the input or output format. The format can even be CSV or mathematical format such as R or even a presentation format, depending on the implementation passed to the database application. The interface is the important asset here, and this is structured using the constructs of the SDMX Information Model: the database application need not be concerned with the actual format of the data.
32 +As you will see the only “methods” that the database application needs to invoke are based on the constructs in the [[SDMX Information Model>>doc:sdmx:Glossary.SDMX Information Model.WebHome]] ([[Group key>>doc:sdmx:Glossary.Group key.WebHome]], [[Series Key>>doc:sdmx:Glossary.Series key.WebHome]], Observation, [[Attribute>>doc:sdmx:Glossary.Attribute.WebHome]]). Each different “implementation” of this interface will enable a database (or, indeed, any other) application to read or write an [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] [[data set>>doc:sdmx:Glossary.Data set.WebHome]] in a specific type of [[data set>>doc:sdmx:Glossary.Data set.WebHome]] message (e.g. [[SDMX-ML>>doc:sdmx:Glossary.SDMX-ML.WebHome]] generic, [[SDMX-ML>>doc:sdmx:Glossary.SDMX-ML.WebHome]] [[DSD>>doc:sdmx:Glossary.Data structure definition.WebHome]]-specific, [[SDMX-EDI>>doc:sdmx:Glossary.SDMX-EDI.WebHome]]). The important, and only, thing to understand from the Interface specification is that the database application never changes, no matter what is the input or output format. The format can even be CSV or mathematical format such as R or even a presentation format, depending on the implementation passed to the database application. The interface is the important asset here, and this is structured using the constructs of the [[SDMX Information Model>>doc:sdmx:Glossary.SDMX Information Model.WebHome]]: the database application need not be concerned with the actual format of the data.
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34 34  (% class="wikigeneratedid" id="HDataQueryReader" %)
35 35  **Data Query Reader**