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1 -{{box title="**Contents**"}}
2 -{{toc/}}
3 -{{/box}}
1 += 13 Structure Mapping =
4 4  
5 5  == 13.1 Introduction ==
6 6  
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18 18  
19 19  * Transforming received data into a common internal structure;
20 20  * Transforming reported data into the data collector's preferred structure;
21 -* Transforming unidimensional datasets{{footnote}}Unidimensional datasets are those with a single 'indicator' or 'series code' dimension.{{/footnote}} to multi-dimensional; and
19 +* Transforming unidimensional datasets^^[[^^43^^>>path:#sdfootnote43sym||name="sdfootnote43anc"]]^^ to multi-dimensional; and
22 22  * Transforming internal datasets with a complex structure to a simpler structure with fewer dimensions suitable for dissemination.
23 23  
24 24  == 13.2 1-1 structure maps ==
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27 27  
28 28  In the example below, ISO 2-character country codes are mapped to their ISO 3character equivalent.
29 29  
30 -(% style="width:666.294px" %)
31 -|(% style="width:217px" %)**Country**|(% style="width:251px" %)**Alpha-2 code**|(% style="width:195px" %)**Alpha-3 code**
32 -|(% style="width:217px" %)Afghanistan|(% style="width:251px" %)AF|(% style="width:195px" %)AFG
33 -|(% style="width:217px" %)Albania|(% style="width:251px" %)AL|(% style="width:195px" %)ALB
34 -|(% style="width:217px" %)Algeria|(% style="width:251px" %)DZ|(% style="width:195px" %)DZA
35 -|(% style="width:217px" %)American Samoa|(% style="width:251px" %)AS|(% style="width:195px" %)ASM
36 -|(% style="width:217px" %)Andorra|(% style="width:251px" %)AD|(% style="width:195px" %)AND
37 -|(% style="width:217px" %)etc…|(% style="width:251px" %) |(% style="width:195px" %)
28 +|Country|Alpha-2 code|Alpha-3 code
29 +|Afghanistan|AF|AFG
30 +|Albania|AL|ALB
31 +|Algeria|DZ|DZA
32 +|American Samoa|AS|ASM
33 +|Andorra|AD|AND
34 +|etc…||
38 38  
39 39  Different source values can also map to the same target value, for example when deriving regions from country codes.
40 40  
41 -(% style="width:674.294px" %)
42 -|(% style="width:284px" %)**Source Component: REF_AREA**|(% style="width:387px" %)**Target Component: REGION**
43 -|(% style="width:284px" %)FR|(% style="width:387px" %)EUR
44 -|(% style="width:284px" %)DE|(% style="width:387px" %)EUR
45 -|(% style="width:284px" %)IT|(% style="width:387px" %)EUR
46 -|(% style="width:284px" %)ES|(% style="width:387px" %)EUR
47 -|(% style="width:284px" %)BE|(% style="width:387px" %)EUR
38 +[[image:SDMX 3-0-0 SECTION 6 FINAL-1.0_en_59eee18f.gif||alt="Shape7" height="1" width="192"]]
48 48  
40 +|Source Component: REF_AREA|Target Component: REGION
41 +|FR|EUR
42 +|DE|EUR
43 +|IT|EUR
44 +|ES|EUR
45 +|BE|EUR
46 +
49 49  == 13.3 N-n structure maps ==
50 50  
51 51  N-n (pronounced 'N to N') mappings describe rules where a specified combination of values in multiple source Components map to specified values in one or more target Components. For example, when mapping a partial Series Key from a highly multidimensional cube (like Balance of Payments) to a single 'Indicator' Dimension in a target Data Structure.
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158 158  |DZ|DZA
159 159  |AS|ASM
160 160  |AD|AND
161 -|etc…|
159 +|etc…|
162 162  
163 163  A Representation Map mapping free text country names to an ISO 2-character Codelist could be similarly described:
164 164  
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169 169  |"Great Britain"|GB
170 170  |"Ireland"|IE
171 171  |"Eire"|IE
172 -|etc…|
170 +|etc…|
173 173  
174 174  Valuelists, introduced in SDMX 3.0, are equivalent to Codelists but allow the maintenance of non-SDMX identifiers. Importantly, their IDs do not need to conform to IDType, but as a consequence are not Identifiable.
175 175  
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180 180  |Value|Locale|Name
181 181  |$|en|United States Dollar
182 182  |%|En|Percentage
183 -| |fr|Pourcentage
181 +||fr|Pourcentage
184 184  
185 185  Other characteristics of Representation Maps:
186 186  
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279 279  
280 280  Date and time formats are specified by date and time pattern strings based on Java's Simple Date Format. Within date and time pattern strings, unquoted letters from 'A' to 'Z' and from 'a' to 'z' are interpreted as pattern letters representing the components of a date or time string. Text can be quoted using single quotes (') to avoid interpretation. "''" represents a single quote. All other characters are not interpreted; they're simply copied into the output string during formatting or matched against the input string during parsing.
281 281  
282 -Due to the fact that dates may differ per locale, an optional property, defining the locale of the pattern, is provided. This would assist processing of source dates, according to the given locale^^[[(% class="wikiinternallink wikiinternallink wikiinternallink" %)^^44^^>>path:#sdfootnote44sym||name="sdfootnote44anc"]](%%)^^. An indicative list of examples is presented in the following table:
280 +Due to the fact that dates may differ per locale, an optional property, defining the locale of the pattern, is provided. This would assist processing of source dates, according to the given locale^^[[^^44^^>>path:#sdfootnote44sym||name="sdfootnote44anc"]]^^. An indicative list of examples is presented in the following table:
283 283  
284 284  |English (en)|Australia (AU)|en-AU
285 285  |English (en)|Canada (CA)|en-CA
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325 325  
326 326  |Letter|Date or Time Component|Presentation|Examples
327 327  |G|Era designator|[[Text>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#text]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#text]]|AD
328 -|yy|Year short (upper case is Year of Week^^[[(% class="wikiinternallink wikiinternallink wikiinternallink" %)^^45^^>>path:#sdfootnote45sym||name="sdfootnote45anc"]](%%)^^)|[[Year>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#year]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#year]]|96
326 +|yy|Year short (upper case is Year of Week^^[[^^45^^>>path:#sdfootnote45sym||name="sdfootnote45anc"]]^^)|[[Year>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#year]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#year]]|96
329 329  |yyyy|Year Full (upper case is Year of Week)|Year|1996
330 330  |MM|Month number in year starting with 1|Month|07
331 331  |MMM|Month name short|Month|Jul
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530 530  
531 531  The following representation mapping can be used to explicitly map each age to an output code.
532 532  
533 -:
531 +:
534 534  
535 535  (((
536 536  |Source Input Free Text|Desired Output Code Id
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547 547  
548 548  __Regular Expression __Desired Output
549 549  
550 -:
548 +:
551 551  
552 552  (((
553 553  |[0-2]|A
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558 558  
559 559  This use case is where a specific observation for a specific time period has an attribute 3468 value.
560 560  
561 -:
559 +:
562 562  
563 563  (((
564 564  |Input INDICATOR|Input TIME_PERIOD|Output OBS_CONF
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579 579  
580 580  The Component Mapping from SYS_TIME to TIME_PERIOD specifies itself as a time mapping with the following details:
581 581  
582 -:
580 +:
583 583  
584 584  (((
585 585  |Source Value|Source Mapping|Target Frequency|Output
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590 590  
591 591  [[image:SDMX 3-0-0 SECTION 6 FINAL-1.0_en_dbe68698.gif||alt="Shape12" height="1" width="273"]]
592 592  
593 -:
594 -::
591 +:
592 +::
595 595  
596 596  (((
597 597  |Source Value|Source Mapping|Target Frequency Output Dimension
598 598  
599 -|18/07/1981 dd/MM/yyyy|FREQ| |1981-07-18 (when FREQ=D)
597 +|18/07/1981 dd/MM/yyyy|FREQ||1981-07-18 (when FREQ=D)
600 600  |(% rowspan="2" %)(((
601 601  __When the source is a numerical form__at
602 602  
603 603  Source Value Start Period Interv
604 -)))| | |
602 +)))|||
605 605  |al|(((
606 606  Target
607 607  
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625 625  Dimension
626 626  
627 627  1981 yyyy D – End of Period 1982-03-31
628 -
629 -{{putFootnotes/}}
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