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Changes for page 13 Structure Mapping

Last modified by Artur on 2025/09/10 11:19
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edited by Helena
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To version 4.9
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... ... @@ -311,55 +311,58 @@
311 311  Examples
312 312  
313 313  22/06/1981 would be described as dd/MM/YYYY, with locale en-GB
314 +
314 314  2008-mars-12 would be described as YYYY-MMM-DD, with locale fr-FR
316 +
315 315  22 July 1981 would be described as dd MMMM YYYY, with locale en-US
318 +
316 316  22 Jul 1981 would be described as dd MMM YYYY
320 +
317 317  2010 D62 would be described as YYYYDnn (day 62 of the year 2010)
318 318  
319 319  The following pattern letters are defined (all other characters from 'A' to 'Z' and from 'a' to 'z' are reserved):
320 320  
321 -(% style="width:850.294px" %)
322 -|(% style="width:125px" %)**Letter**|(% style="width:385px" %)**Date or Time Component**|(% style="width:180px" %)**Presentation**|(% style="width:157px" %)**Examples**
323 -|(% style="width:125px" %)G|(% style="width:385px" %)Era designator|(% style="width:180px" %)Text|(% style="width:157px" %)AD
324 -|(% style="width:125px" %)yy|(% style="width:385px" %)Year short (upper case is Year of Week{{footnote}}yyyy represents the calendar year while YYYY represents the year of the week, which is only relevant for 53 week years{{/footnote}})|(% style="width:180px" %)Year|(% style="width:157px" %)96
325 -|(% style="width:125px" %)yyyy|(% style="width:385px" %)Year Full (upper case is Year of Week)|(% style="width:180px" %)Year|(% style="width:157px" %)1996
326 -|(% style="width:125px" %)MM|(% style="width:385px" %)Month number in year starting with 1|(% style="width:180px" %)Month|(% style="width:157px" %)07
327 -|(% style="width:125px" %)MMM|(% style="width:385px" %)Month name short|(% style="width:180px" %)Month|(% style="width:157px" %)Jul
328 -|(% style="width:125px" %)MMMM|(% style="width:385px" %)Month name full|(% style="width:180px" %)Month|(% style="width:157px" %)July
329 -|(% style="width:125px" %)ww|(% style="width:385px" %)Week in year|(% style="width:180px" %)Number|(% style="width:157px" %)27
330 -|(% style="width:125px" %)W|(% style="width:385px" %)Week in month|(% style="width:180px" %)Number|(% style="width:157px" %)2
331 -|(% style="width:125px" %)DD|(% style="width:385px" %)Day in year|(% style="width:180px" %)Number|(% style="width:157px" %)189
332 -|(% style="width:125px" %)dd|(% style="width:385px" %)Day in month|(% style="width:180px" %)Number|(% style="width:157px" %)10
333 -|(% style="width:125px" %)F|(% style="width:385px" %)Day of week in month|(% style="width:180px" %)Number|(% style="width:157px" %)2
334 -|(% style="width:125px" %)E|(% style="width:385px" %)Day name in week|(% style="width:180px" %)Text|(% style="width:157px" %)Tuesday; Tue
335 -|(% style="width:125px" %)U|(% style="width:385px" %)Day number of week (1 = Monday, ..., 7 = Sunday)|(% style="width:180px" %)Number|(% style="width:157px" %)1
336 -|(% style="width:125px" %)HH|(% style="width:385px" %)Hour in day (0-23)|(% style="width:180px" %)Number|(% style="width:157px" %)0
337 -|(% style="width:125px" %)kk|(% style="width:385px" %)Hour in day (1-24)|(% style="width:180px" %)Number|(% style="width:157px" %)24
338 -|(% style="width:125px" %)KK|(% style="width:385px" %)Hour in am/pm (0-11)|(% style="width:180px" %)Number|(% style="width:157px" %)0
339 -|(% style="width:125px" %)hh|(% style="width:385px" %)Hour in am/pm (1-12)|(% style="width:180px" %)Number|(% style="width:157px" %)12
340 -|(% style="width:125px" %)mm|(% style="width:385px" %)Minute in hour|(% style="width:180px" %)Number|(% style="width:157px" %)30
341 -|(% style="width:125px" %)ss|(% style="width:385px" %)Second in minute|(% style="width:180px" %)Number|(% style="width:157px" %)55
342 -|(% style="width:125px" %)S|(% style="width:385px" %)Millisecond|(% style="width:180px" %)Number|(% style="width:157px" %)978
343 -|(% style="width:125px" %)n|(% style="width:385px" %)(((
325 +|Letter|Date or Time Component|Presentation|Examples
326 +|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
327 +|yy|Year short (upper case is Year of Week{{footnote}}yyyy represents the calendar year while YYYY represents the year of the week, which is only relevant for 53 week years{{/footnote}})|[[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
328 +|yyyy|Year Full (upper case is Year of Week)|Year|1996
329 +|MM|Month number in year starting with 1|Month|07
330 +|MMM|Month name short|Month|Jul
331 +|MMMM|Month name full|Month|July
332 +|ww|Week in year|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|27
333 +|W|Week in month|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|2
334 +|DD|Day in year|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|189
335 +|dd|Day in month|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|10
336 +|F|Day of week in month|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|2
337 +|E|Day name in week|[[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]]|Tuesday; Tue
338 +|U|Day number of week (1 = Monday, ..., 7 = Sunday)|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|1
339 +|HH|Hour in day (0-23)|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|0
340 +|kk|Hour in day (1-24)|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|24
341 +|KK|Hour in am/pm (0-11)|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|0
342 +|hh|Hour in am/pm (1-12)|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|12
343 +|mm|Minute in hour|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|30
344 +|ss|Second in minute|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|55
345 +|S|Millisecond|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|978
346 +|n|(((
344 344  Number of periods, used after a SDMX
348 +
345 345  Frequency Identifier such as M, Q, D (month, quarter, day)
346 -)))|(% style="width:180px" %)Number|(% style="width:157px" %)12
350 +)))|[[Number>>url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]][[url:https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html#number]]|12
347 347  
348 348  The model is illustrated below:
349 349  
350 -[[image:1750074822764-573.png]]
351 351  
355 +
352 352  **Figure 24 showing the component map mapping the SOURCE_DATE Dimension to the TIME_PERIOD dimension with the additional information on the component map to describe the time format?**
353 353  
354 -[[image:1750074865924-797.png]]
355 355  
356 -(% class="wikigeneratedid" id="HFigure25showinganinputdateformat2CwhoseoutputfrequencyisderivedfromtheoutputvalueoftheFREQDimension" %)
357 -**Figure 25 showing an input date format, whose output frequency is derived from the output value of the FREQ Dimension**
358 358  
359 -=== 13.7.2 Numerical based datetime ===
360 +==== Figure 25 showing an input date format, whose output frequency is derived from the output value of the FREQ Dimension ====
360 360  
361 -Where the source datetime input is purely numerical, the mapping rules are defined by the **Base** as a valid [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] [[Time Period>>doc:sdmx:Glossary.Time period.WebHome]], and the **Period** which must take one of the following enumerated values:
362 +=== 13.3.6 Numerical based datetime ===
362 362  
364 +Where the source datetime input is purely numerical, the mapping rules are defined by the **Base** as a valid SDMX Time Period, and the **Period** which must take one of the following enumerated values:
365 +
363 363  * day
364 364  * second
365 365  * millisecond
... ... @@ -366,63 +366,75 @@
366 366  * microsecond
367 367  * nanosecond
368 368  
369 -(% style="width:545.294px" %)
370 -|(% style="width:268px" %)Numerical datetime systems|(% style="width:121px" %)Base|(% style="width:153px" %)Period
371 -|(% style="width:268px" %)(((
372 +|Numerical datetime systems|Base|Period
373 +|(((
372 372  Epoch Time (UNIX)
375 +
373 373  Milliseconds since 01 Jan 1970
374 -)))|(% style="width:121px" %)1970|(% style="width:153px" %)millisecond
375 -|(% style="width:268px" %)(((
377 +)))|1970|millisecond
378 +|(((
376 376  Windows System Time
380 +
377 377  Milliseconds since 01 Jan 1601
378 -)))|(% style="width:121px" %)1601|(% style="width:153px" %)millisecond
382 +)))|1601|millisecond
379 379  
380 380  The example above illustrates numerical based datetime mapping rules for two commonly used time standards.
381 381  
382 382  The model is illustrated below:
383 383  
384 -[[image:1750074994887-415.png]]
388 +[[image:1750072341491-790.jpeg]]
385 385  
386 -**Figure 26 showing the component map mapping the SOURCE_DATE Dimension to the TIME_PERIOD Dimension with the additional information on the component map to describe the numerical datetime system in use **
390 +**Figure 26 showing the component map mapping the SOURCE_DATE Dimension to the**
387 387  
388 -=== 13.7.3 Mapping more complex time inputs ===
392 +==== TIME_PERIOD Dimension with the additional information on the component map to describe the numerical datetime system in use ====
389 389  
390 -[[VTL>>doc:sdmx:Glossary.Validation and transformation language.WebHome]] should be used for more complex time inputs that cannot be interpreted using the pattern based on numerical methods.
394 +=== Mapping more complex time inputs ===
391 391  
392 -== 13.8 Using TIME_PERIOD in mapping rules ==
396 +VTL should be used for more complex time inputs that cannot be interpreted using the pattern based on numerical methods.
393 393  
394 -The source TIME_PERIOD [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]] can be used in conjunction with other input [[Dimensions>>doc:sdmx:Glossary.Dimension.WebHome]] to create discrete mapping rules where the output is conditional on the [[time period>>doc:sdmx:Glossary.Time period.WebHome]] value.
398 +== Using TIME_PERIOD in mapping rules ==
395 395  
396 -The main use case is setting the value of Observation [[Attributes>>doc:sdmx:Glossary.Attribute.WebHome]] in the target [[dataset>>doc:sdmx:Glossary.Data set.WebHome]].
400 +The source TIME_PERIOD Dimension can be used in conjunction with other input Dimensions to create discrete mapping rules where the output is conditional on the time period value.
397 397  
398 -(% style="width:709.294px" %)
399 -|(% style="width:103px" %)**Rule**|(% style="width:405px" %)**Source**|(% style="width:198px" %)**Target**
400 -|(% style="width:103px" %)1|(% style="width:405px" %)(((
402 +The main use case is setting the value of Observation Attributes in the target dataset.
403 +
404 +|Rule|Source|Target
405 +|1|(((
401 401  If
407 +
402 402  INDICATOR=XULADS; and TIME_PERIOD=2007.
403 -)))|(% style="width:198px" %)(((
404 -Set OBS_CONF=F
409 +)))|(((
410 +Set
411 +
412 +OBS_CONF=F
405 405  )))
406 -|(% style="width:103px" %)2|(% style="width:405px" %)(((
414 +|2|(((
407 407  If
416 +
408 408  INDICATOR=XULADS; and TIME_PERIOD=2008.
409 -)))|(% style="width:198px" %)Set OBS_CONF=F
410 -|(% style="width:103px" %)3|(% style="width:405px" %)(((
418 +)))|Set OBS_CONF=F
419 +|3|(((
411 411  If
421 +
412 412  INDICATOR=XULADS; and TIME_PERIOD=2009.
413 -)))|(% style="width:198px" %)(((
414 -Set OBS_CONF=F
423 +)))|(((
424 +Set
425 +
426 +OBS_CONF=F
415 415  )))
416 -|(% style="width:103px" %)4|(% style="width:405px" %)(((
428 +|4|(((
417 417  If
430 +
418 418  INDICATOR=XULADS; and TIME_PERIOD=2010.
419 -)))|(% style="width:198px" %)(((
420 -Set OBS_CONF=**C**
432 +)))|(((
433 +Set
434 +
435 +OBS_CONF=**C**
421 421  )))
422 422  
423 -In the example above, OBS_CONF is an Observation [[Attribute>>doc:sdmx:Glossary.Attribute.WebHome]].
438 +In the example above, OBS_CONF is an Observation Attribute.
424 424  
425 -== 13.9 Time span mapping rules using validity periods ==
440 +== 13. Time span mapping rules using validity periods ==
426 426  
427 427  Creating discrete mapping rules for each TIME_PERIOD is impractical where rules need to cover a specific span of time regardless of frequency, and for high-frequency data.
428 428  
... ... @@ -430,22 +430,25 @@
430 430  
431 431  By specifying validity periods, the example from Section 13.8 can be re-written using two rules as follows:
432 432  
433 -(% style="width:516.294px" %)
434 -|(% style="width:74px" %)Rule|(% style="width:215px" %)Source|(% style="width:223px" %)Target
435 -|(% style="width:74px" %)1|(% style="width:215px" %)(((
448 +|Rule|Source|Target
449 +|1|(((
436 436  If
451 +
437 437  INDICATOR=XULADS.
438 -Validity Period
439 -start period=2007
440 -end period=2009
441 -)))|(% style="width:223px" %)Set OBS_CONF=F
442 -|(% style="width:74px" %)2|(% style="width:215px" %)(((
453 +
454 +
455 +Validity Period start period=2007 end period=2009
456 +)))|Set OBS_CONF=F
457 +|2|(((
443 443  If
459 +
444 444  INDICATOR=XULADS.
445 -Validity Period
446 -start period=2010
447 -)))|(% style="width:223px" %)(((
461 +
462 +
463 +Validity Period start period=2010
464 +)))|(((
448 448  Set
466 +
449 449  OBS_CONF=F
450 450  )))
451 451  
... ... @@ -453,68 +453,78 @@
453 453  
454 454  In Rule 2, no end period is specified so remains in effect from the start of the period (2010-01-01T00:00:00) until the end of time. Any observations reporting data for the Indicator XULADS that fall into that time range will have an OBS_CONF value of C.
455 455  
456 -In Rule 2, no end period is specified so remains in effect from the start of the period (2010-01-01T00:00:00) until the end of time. Any observations reporting data for the Indicator XULADS that fall into that time range will have an OBS_CONF value of C.
474 +== 13. Mapping examples ==
457 457  
458 -== 13.10 Mapping examples ==
476 +=== 13. Many to one mapping (N-1) ===
459 459  
460 -=== 13.10.1 Many to one mapping (N3513 -1) ===
478 +|Source|Map To
479 +|(((
480 +**FREQ**="A"
461 461  
462 -(% style="width:542.294px" %)
463 -|(% style="width:274px" %)**Source**|(% style="width:265px" %)**Map To**
464 -|(% style="width:274px" %)(((
465 -(% style="color:#8e44ad" %)**FREQ**="A"
466 466  ADJUSTMENT="N"
483 +
467 467  **REF_AREA**="PL"
485 +
468 468  **COUNTERPART_AREA**="W0"
487 +
469 469  REF_SECTOR="S1"
489 +
470 470  COUNTERPART_SECTOR="S1"
491 +
471 471  ACCOUNTING_ENTRY="B"
493 +
472 472  STO="B5G"
473 -)))|(% style="width:265px" %)(((
474 -(% style="color:#8e44ad" %)FREQ="A"
495 +)))|(((
496 +FREQ="A"
497 +
475 475  REF_AREA="PL"
499 +
476 476  COUNTERPART_AREA="W0"
477 -INDICATOR="IND_ABC"(%%)
501 +INDICATOR="IND_ABC"
478 478  
479 479  )))
480 480  
481 -The bold [[Dimensions>>doc:sdmx:Glossary.Dimension.WebHome]] (% style="color:#e74c3c" %)map(%%) from source to target verbatim. The mapping simply specifies:
505 +The bold Dimensions map from source to target verbatim. The mapping simply specifies:
482 482  
483 -> FREQ => FREQ
484 -> REF_AREA=> REF_AREA
485 -> COUNTERPART_AREA=> COUNTERPART _AREA
507 +FREQ => FREQ
486 486  
487 -No [[Representation>>doc:sdmx:Glossary.Representation.WebHome]] Mapping is required. The source value simply copies across unmodified.
509 +REF_AREA=> REF_AREA
488 488  
489 -The remaining [[Dimensions>>doc:sdmx:Glossary.Dimension.WebHome]] all (% style="color:#e74c3c" %)map(%%) to the Indicator [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]]. This is an example of many [[Dimensions>>doc:sdmx:Glossary.Dimension.WebHome]] mapping to one [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]]. In this case a [[Representation>>doc:sdmx:Glossary.Representation.WebHome]] Mapping is required, and the mapping first describes the input 'partial key' and how this (% style="color:#e74c3c" %)maps(%%) to the target indicator:
511 +COUNTERPART_AREA=> COUNTERPART _AREA
490 490  
491 -> N:S1:S1:B:B5G => IND_ABC
513 +No Representation Mapping is required. The source value simply copies across unmodified.
492 492  
493 -Where the key sequence is based on the order specified in the (% style="color:#e74c3c" %)mapping(%%) (i.e [[ADJUSTMENT>>doc:sdmx:Glossary.Adjustment.WebHome]], REF_SECTOR, etc will result in the first value N being taken from [[ADJUSTMENT>>doc:sdmx:Glossary.Adjustment.WebHome]] as this was the first item in the source [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]] list.
515 +The remaining Dimensions all map to the Indicator Dimension. This is an example of many Dimensions mapping to one Dimension. In this case a Representation Mapping is required, and the mapping first describes the input 'partial key' and how this maps to the target indicator:
494 494  
495 -**Note**: The key order is NOT based on the [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]] order of the [[DSD>>doc:sdmx:Glossary.Data structure definition.WebHome]], as the (% style="color:#e74c3c" %)mapping(%%) needs to be resilient to the [[DSD>>doc:sdmx:Glossary.Data structure definition.WebHome]] changing.
517 +N:S1:S1:B:B5G => IND_ABC
496 496  
497 -=== 13.10.2 Mapping other data types to Code Id ===
519 +Where the key sequence is based on the order specified in the mapping (i.e ADJUSTMENT, REF_SECTOR, etc will result in the first value N being taken from ADJUSTMENT as this was the first item in the source Dimension list.
498 498  
499 -In the case where the incoming data type is not a string and not a [[code>>doc:sdmx:Glossary.Code.WebHome]] identifier i.e. the source [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]] is of type Integer and the target is Codelist. This is supported by the RepresentationMap. The RepresentationMap source can reference a Codelist, Valuelist, or be free text, the free text can include regular expressions.
521 +**Note**: The key order is NOT based on the Dimension order of the DSD, as the mapping needs to be resilient to the DSD changing.
500 500  
501 -The following [[representation>>doc:sdmx:Glossary.Representation.WebHome]] (% style="color:#e74c3c" %)mapping(%%) can be used to explicitly (% style="color:#e74c3c" %)map(%%) each [[age>>doc:sdmx:Glossary.Age.WebHome]] to an output [[code>>doc:sdmx:Glossary.Code.WebHome]].
523 +1.
524 +11.
525 +111. Mapping other data types to Code Id
502 502  
503 -(% style="width:402.294px" %)
504 -|(% style="width:197px" %)**Source Input Free Text**|(% style="width:204px" %)**Desired Output Code Id**
505 -|(% style="width:197px" %)0|(% style="width:204px" %)A
506 -|(% style="width:197px" %)1|(% style="width:204px" %)A
507 -|(% style="width:197px" %)2|(% style="width:204px" %)A
508 -|(% style="width:197px" %)3|(% style="width:204px" %)B
509 -|(% style="width:197px" %)4|(% style="width:204px" %)B
527 +In the case where the incoming data type is not a string and not a code identifier i.e. the source Dimension is of type Integer and the target is Codelist. This is supported by the RepresentationMap. The RepresentationMap source can reference a Codelist, Valuelist, or be free text, the free text can include regular expressions.
510 510  
511 -If this mapping takes advantage of regular expressions it can be expressed in two rules: 
529 +The following representation mapping can be used to explicitly map each age to an output code.
512 512  
513 -(% style="width:336.294px" %)
514 -|(% style="width:182px" %)**Regular Expression**|(% style="width:151px" %)**Desired Output**
515 -|(% style="width:182px" %)[0-2]|(% style="width:151px" %)A
516 -|(% style="width:182px" %)[3-4]|(% style="width:151px" %)B
531 +|Source Input Free Text|Desired Output Code Id
532 +|0|A
533 +|1|A
534 +|2|A
535 +|3|B
536 +|4|B
517 517  
538 +If this mapping takes advantage of regular expressions it can be expressed in two rules:
539 +
540 +
541 +Regular Expression Desired Output
542 +
543 +|[0-2]|A
544 +|[3-4]|B
545 +
518 518  === 13. Observation Attributes for Time Period ===
519 519  
520 520  This use case is where a specific observation for a specific time period has an attribute value.
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