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1 -= {{id name="_Toc291503"/}}4 General Notes for Implementers =
1 +{{box title="**Contents**"}}
2 +{{toc/}}
3 +{{/box}}
2 2  
3 3  This section discusses a number of topics other than the exchange of data sets in SDMX formats. Supported only in SDMX-ML (and some in SDMX-JSON), these topics include the use of the reference metadata mechanism in SDMX, the use of Structure Sets and Reporting Taxonomies, the use of Processes, a discussion of time and datatyping, and the conventional mechanisms within the SDMX-ML Structure message regarding versioning and referencing.
4 4  
... ... @@ -8,99 +8,69 @@
8 8  
9 9  There are several different representations in SDMX-ML, taken from XML Schemas and common programming languages. The table below describes the various representations, which are found in SDMX-ML, and their equivalents.
10 10  
11 -|SDMX-ML Data Type|XML Schema Data Type|.NET Framework Type|Java Data Type
12 -|**String**|**xsd:string**|**System.String**|**java.lang.String**
13 -|**Big Integer**|**xsd:integer**|**System.Decimal**|**java.math.BigInteger**
14 -|**Integer**|**xsd:int**|**System.Int32**|**int**
15 -|**Long**|**xsd.long**|**System.Int64**|**long**
16 -|**Short**|**xsd:short**|**System.Int16**|**short**
17 -|**Decimal**|**xsd:decimal**|**System.Decimal**|**java.math.BigDecimal**
18 -|**Float**|**xsd:float**|**System.Single**|**float**
19 -|**Double**|**xsd:double**|**System.Double**|**double**
20 -|**Boolean**|**xsd:boolean**|**System.Boolean**|**boolean**
21 -|**URI**|**xsd:anyURI**|**System.Uri**|**Java.net.URI or java.lang.String**
22 -|**DateTime**|**xsd:dateTime**|**System.DateTime**|**javax.xml.datatype.XMLG regorianCalendar**
23 -|**Time**|**xsd:time**|**System.DateTime**|**javax.xml.datatype.XMLG regorianCalendar**
24 -|**GregorianYear**|**xsd:gYear**|**System.DateTime**|**javax.xml.datatype.XMLG regorianCalendar**
25 -|**GregorianMonth**|**xsd:gYearMonth**|**System.DateTime**|**javax.xml.datatype.XMLG regorianCalendar**
26 -|**GregorianDay**|**xsd:date**|**System.DateTime**|**javax.xml.datatype.XMLG regorianCalendar**
27 -|**Day, MonthDay, Month**|**xsd:g***|**System.DateTime**|**javax.xml.datatype.XMLG regorianCalendar**
28 -|**Duration**|**xsd:duration**|**System.TimeSpan**|**javax.xml.datatype.Dura tion**
13 +(% style="width:1185.29px" %)
14 +|(% style="width:250px" %)**SDMX-ML Data Type**|(% style="width:285px" %)**XML Schema Data Type**|(% style="width:271px" %)**.NET Framework Type**|(% style="width:354px" %)**Java Data Type**
15 +|(% style="width:250px" %)String|(% style="width:285px" %)xsd:string|(% style="width:271px" %)System.String|(% style="width:354px" %)java.lang.String
16 +|(% style="width:250px" %)Big Integer|(% style="width:285px" %)xsd:integer|(% style="width:271px" %)System.Decimal|(% style="width:354px" %)java.math.BigInteger
17 +|(% style="width:250px" %)Integer|(% style="width:285px" %)xsd:int|(% style="width:271px" %)System.Int32|(% style="width:354px" %)int
18 +|(% style="width:250px" %)Long|(% style="width:285px" %)xsd.long|(% style="width:271px" %)System.Int64|(% style="width:354px" %)long
19 +|(% style="width:250px" %)Short|(% style="width:285px" %)xsd:short|(% style="width:271px" %)System.Int16|(% style="width:354px" %)short
20 +|(% style="width:250px" %)Decimal|(% style="width:285px" %)xsd:decimal|(% style="width:271px" %)System.Decimal|(% style="width:354px" %)java.math.BigDecimal
21 +|(% style="width:250px" %)Float|(% style="width:285px" %)xsd:float|(% style="width:271px" %)System.Single|(% style="width:354px" %)float
22 +|(% style="width:250px" %)Double|(% style="width:285px" %)xsd:double|(% style="width:271px" %)System.Double|(% style="width:354px" %)double
23 +|(% style="width:250px" %)Boolean|(% style="width:285px" %)xsd:boolean|(% style="width:271px" %)System.Boolean|(% style="width:354px" %)boolean
24 +|(% style="width:250px" %)URI|(% style="width:285px" %)xsd:anyURI|(% style="width:271px" %)System.Uri|(% style="width:354px" %)Java.net.URI or java.lang.String
25 +|(% style="width:250px" %)DateTime|(% style="width:285px" %)xsd:dateTime|(% style="width:271px" %)System.DateTime|(% style="width:354px" %)javax.xml.datatype.XMLG regorianCalendar
26 +|(% style="width:250px" %)Time|(% style="width:285px" %)xsd:time|(% style="width:271px" %)System.DateTime|(% style="width:354px" %)javax.xml.datatype.XMLG regorianCalendar
27 +|(% style="width:250px" %)GregorianYear|(% style="width:285px" %)xsd:gYear|(% style="width:271px" %)System.DateTime|(% style="width:354px" %)javax.xml.datatype.XMLG regorianCalendar
28 +|(% style="width:250px" %)GregorianMonth|(% style="width:285px" %)xsd:gYearMonth|(% style="width:271px" %)System.DateTime|(% style="width:354px" %)javax.xml.datatype.XMLG regorianCalendar
29 +|(% style="width:250px" %)GregorianDay|(% style="width:285px" %)xsd:date|(% style="width:271px" %)System.DateTime|(% style="width:354px" %)javax.xml.datatype.XMLG regorianCalendar
30 +|(% style="width:250px" %)Day, MonthDay, Month|(% style="width:285px" %)xsd:g*|(% style="width:271px" %)System.DateTime|(% style="width:354px" %)javax.xml.datatype.XMLG regorianCalendar
31 +|(% style="width:250px" %)Duration|(% style="width:285px" %)xsd:duration|(% style="width:271px" %)System.TimeSpan|(% style="width:354px" %)javax.xml.datatype.Dura tion
29 29  
30 30  There are also a number of SDMX-ML data types which do not have these direct correspondences, often because they are composite representations or restrictions of a broader data type. For most of these, there are simple types which can be referenced from the SDMX schemas, for others a derived simple type will be necessary:
31 31  
32 -• **AlphaNumeric** (**common:AlphaNumericType**, string which only allows A-z and 0-9)
35 +* AlphaNumeric (common:AlphaNumericType, string which only allows A-z and 0-9)
36 +* Alpha (common:AlphaType, string which only allows A-z)
37 +* Numeric (common:NumericType, string which only allows 0-9, but is not numeric so that is can having leading zeros)
38 +* Count (xs:integer, a sequence with an interval of "1")
39 +* InclusiveValueRange (xs:decimal with the minValue and maxValue facets supplying the bounds)
40 +* ExclusiveValueRange (xs:decimal with the minValue and maxValue facets supplying the bounds)
41 +* Incremental (xs:decimal with a specified interval; the interval is typically enforced outside of the XML validation)
42 +* TimeRange (common:TimeRangeType, startDateTime + Duration)
43 +* ObservationalTimePeriod (common:ObservationalTimePeriodType, a union of StandardTimePeriod and TimeRange).
44 +* StandardTimePeriod (common:StandardTimePeriodType, a union of BasicTimePeriod and ReportingTimePeriod).
45 +* BasicTimePeriod (common:BasicTimePeriodType, a union of GregorianTimePeriod and DateTime)
46 +* GregorianTimePeriod (common:GregorianTimePeriodType, a union of GregorianYear, GregorianMonth, and GregorianDay)
47 +* ReportingTimePeriod (common:ReportingTimePeriodType, a union of ReportingYear, ReportingSemester, ReportingTrimester, ReportingQuarter, ReportingMonth, ReportingWeek, and ReportingDay).
48 +* ReportingYear (common:ReportingYearType)
49 +* ReportingSemester (common:ReportingSemesterType)
50 +* ReportingTrimester (common:ReportingTrimesterType)
51 +* ReportingQuarter (common:ReportingQuarterType)
52 +* ReportingMonth (common:ReportingMonthType)
53 +* ReportingWeek (common:ReportingWeekType)
54 +* ReportingDay (common:ReportingDayType)
55 +* XHTML (common:StructuredText, allows for multi-lingual text content that has XHTML markup)
56 +* KeyValues (common:DataKeyType)
57 +* IdentifiableReference (types for each IdentifiableObject)
58 +* GeospatialInformation (a geo feature set, according to the pattern in section 7.2)
33 33  
34 -• **Alpha** (**common:AlphaType**, string which only allows A-z)
35 -
36 -• ,,**Numeric**,, (,,**common:NumericType**,,, string which only allows 0-9, but is not numeric so that is can having leading zeros)
37 -
38 -• ,,**Count**,, (,,**xs:integer**,,, a sequence with an interval of "1")
39 -
40 -• **InclusiveValueRange** (**xs:decimal** with the **minValue** and **maxValue** facets supplying the bounds)
41 -
42 -• **ExclusiveValueRange** (**xs:decimal** with the **minValue** and **maxValue** facets supplying the bounds)
43 -
44 -• **Incremental** (**xs:decimal** with a specified **interval**; the interval is typically enforced outside of the XML validation)
45 -
46 -• **TimeRange** (**common:TimeRangeType**, **startDateTime** + **Duration**)
47 -
48 -• **ObservationalTimePeriod** (**common:ObservationalTimePeriodType**, a union of **StandardTimePeriod** and **TimeRange**).
49 -
50 -• **StandardTimePeriod** (**common:StandardTimePeriodType**, a union of **BasicTimePeriod** and **ReportingTimePeriod**).
51 -
52 -• **BasicTimePeriod** (**common:BasicTimePeriodType**, a union of **GregorianTimePeriod** and **DateTime**)
53 -
54 -• **GregorianTimePeriod** (**common:GregorianTimePeriodType**, a union of **GregorianYear**, **GregorianMonth**, and **GregorianDay**)
55 -
56 -• **ReportingTimePeriod** (**common:ReportingTimePeriodType**, a union of **ReportingYear**, **ReportingSemester**, **ReportingTrimester**, **ReportingQuarter**, **ReportingMonth**, **ReportingWeek**, and **ReportingDay**).
57 -
58 -• **ReportingYear** (**common:ReportingYearType**)
59 -
60 -• **ReportingSemester** (**common:ReportingSemesterType**)
61 -
62 -• **ReportingTrimester** (**common:ReportingTrimesterType**)
63 -
64 -• **ReportingQuarter** (**common:ReportingQuarterType**)
65 -
66 -• **ReportingMonth** (**common:ReportingMonthType**)
67 -
68 -• **ReportingWeek** (**common:ReportingWeekType**)
69 -
70 -• **ReportingDay** (**common:ReportingDayType**)
71 -
72 -• ,,**XHTML**,, (,,**common:StructuredText**,,, allows for multi-lingual text content that has ,,**XHTML**,, markup)
73 -
74 -• **KeyValues** (**common:DataKeyType**)
75 -
76 -• ,,**IdentifiableReference**,, (types for each IdentifiableObject)
77 -
78 -• ,,**GeospatialInformation**,, (a geo feature set, according to the pattern in section 7.2)
79 -
80 80  Data types also have a set of facets:
81 81  
82 -• ,,**isSequence = true | false**,, (indicates a sequentially increasing value)
62 +* isSequence = true | false (indicates a sequentially increasing value)
63 +* minLength = positive integer (# of characters/digits)
64 +* maxLength = positive integer (# of characters/digits)
65 +* startValue = decimal (for numeric sequence)
66 +* endValue = decimal (for numeric sequence)
67 +* interval = decimal (for numeric sequence)
68 +* timeInterval = duration
69 +* startTime = BasicTimePeriod (for time range) endTime = BasicTimePeriod (for time range)
70 +* minValue = decimal (for numeric range)
71 +* maxValue = decimal (for numeric range)
72 +* decimal = Integer (# of digits to right of decimal point)
73 +* pattern = (a regular expression, as per W3C XML Schema)
74 +* isMultiLingual = boolean (for specifying text can occur in more than one language)
83 83  
84 -• ,,**minLength = positive integer**,, (# of characters/digits)
85 -
86 -• ,,**maxLength = positive integer**,, (# of characters/digits)
87 -
88 -• ,,**startValue = decimal**,, (for numeric sequence)
89 -
90 -• ,,**endValue = decimal**,, (for numeric sequence)
91 -
92 -• ,,**interval = decimal**,, (for numeric sequence)
93 -
94 -• **timeInterval = duration**
95 -
96 -• **startTime = BasicTimePer,,iod,,** (for time range) ,,**endTime = BasicTimePeriod**,, (for time range)
97 -
98 -* ,,**minValue = decimal**,, (for numeric range)
99 -* ,,**maxValue = decimal**,, (for numeric range)
100 -* ,,**decimal = Integer**,, (# of digits to right of decimal point)
101 -* ,,**pattern =**,, (a regular expression, as per W3C XML Schema)
102 -* ,,**isMultiLingual = boolean**,, (for specifying text can occur in more than one language)
103 -
104 104  Note that code lists may also have textual representations assigned to them, in addition to their enumeration of codes.
105 105  
106 106  === {{id name="_Toc291505"/}}4.1.1 Data Types ===
... ... @@ -111,76 +111,47 @@
111 111  
112 112  For example, for the id type, this is the XML schema definition:
113 113  
114 -<xs:simpleType name="IDType">
86 +> <xs:simpleType name="IDType">
87 +> <xs:restriction base="NestedIDType">
88 +> <xs:pattern value="[A-Za-z0-9_@$\-]+"/>
89 +> </xs:restriction>
90 +> </xs:simpleType>
115 115  
116 -<xs:restriction base="NestedIDType">
117 -
118 -<xs:pattern value="[A-Za-z0-9_@$\-]+"/>
119 -
120 -</xs:restriction>
121 -
122 -</xs:simpleType>
123 -
124 124  Where the NestedIDType is also a restriction of string.
125 125  
126 126  The above looks like this, in JSON schema:
127 127  
128 -"idType": {
96 +> "idType": {
97 +> "type": "string",
98 +> "pattern": "^[A-Za-z0-9_@$-]+$"
99 +> }
129 129  
130 -"type": "string",
131 -
132 -"pattern": "^[A-Za-z0-9_@$-]+$"
133 -
134 -}
135 -
136 136  There are also cases, though, that data types cannot be mapped like above. One such case is the array data type, which was introduced in SDMX 3.0 as a new representation. In JSON schema an array is already natively foreseen, while in the XML schema, this has to be defined as a complex type, with an SDMX specific definition (i.e., specific element/attribute names for SDMX). Beyond that, the minimum and/or maximum number of items within an array is possible in both cases.
137 137  
138 138  Further to the above, the mapping between the non-native data types is presented in the table below:
139 139  
140 -|**SDMX Facet**|**XML Schema**|**JSON schema **"**pattern**"^^[[^^1^^>>path:#sdfootnote1sym||name="sdfootnote1anc"]]^^ **for "string" type**
141 -|GregorianYear|xsd:gYear|(((
142 -"^-?([1-9][0-9]{3,}|0[0-9]{3})(Z|(\+|-)((0[0-
143 -
144 -9]|1[0-3]):[0-5][0-9]|14:00))?$"
105 +(% style="width:1146.29px" %)
106 +|(% style="width:159px" %)**SDMX Facet**|(% style="width:179px" %)**XML Schema**|(% style="width:800px" %)**JSON schema **"**pattern**"{{footnote}}Regular expressions, as specified in W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes.{{/footnote}} **for "string" type**
107 +|(% style="width:159px" %)GregorianYear|(% style="width:179px" %)xsd:gYear|(% style="width:800px" %)(((
108 +"^-?( [1-9] [0-9] {3,}|0[0-9]{3}) (Z| (\ + | -) ((0 [0 - 9]| 1[0 - 3]):[0 - 5] [0 - 9] | 14:00))?$"
145 145  )))
146 -|GregorianMonth|xsd:gYearMonth|(((
147 -"^-?([1-9][0-9]{3,}|0[0-9]{3})-(0[1-9]|1[0-
148 -
149 -2])(Z|(\+|-)((0[0-9]|1[0-3]):[0-5][0-
150 -
151 -9]|14:00))?$"
110 +|(% style="width:159px" %)GregorianMonth|(% style="width:179px" %)xsd:gYearMonth|(% style="width:800px" %)(((
111 +"^-?([1-9] [0-9] {3,}|0 [0-9] {3}) - (0 [1-9]|1[ 0- 2])(Z|(\+|-)((0[0-9]|1[0-3]):[0-5] [0 - 9]|14:00))?$"
152 152  )))
153 -
154 -[[image:SDMX 3-0-0 SECTION 6 FINAL-1.0_en_59eee18f.gif||alt="Shape1" height="1" width="192"]]
155 -
156 -|GregorianDay|xsd:date|(((
157 -"^-?([1-9][0-9]{3,}|0[0-9]{3})-(0[1-9]|1[0-2])-
158 -
159 -(0[1-9]|[12][0-9]|3[01])(Z|(\+|-)((0[0-9]|1[0-
160 -
161 -3]):[0-5][0-9]|14:00))?$"
113 +|(% style="width:163px" %)GregorianDay|(% style="width:179px" %)xsd:date|(% style="width:800px" %)(((
114 +"^-?([1-9][0-9]{3,}|0[0-9]{3})-(0[1-9]|1[0-2])- (0[1-9]|[12][0-9]|3[01])(Z|(\+|-)((0[0-9]|1[0- 3]):[0-5][0-9]|14:00))?$"
162 162  )))
163 -|Day|xsd:gDay|(((
164 -"^~-~--(0[1-9]|[12][0-9]|3[01])(Z|(\+|-
165 -
166 -)((0[0-9]|1[0-3]):[0-5][0-9]|14:00))?$"
116 +|(% style="width:163px" %)Day|(% style="width:179px" %)xsd:gDay|(% style="width:800px" %)(((
117 +"^~-~--(0[1-9]|[12][0-9]|3[01])(Z|(\+|- )((0[0-9]|1[0-3]):[0-5][0-9]|14:00))?$"
167 167  )))
168 -|MonthDay|xsd:gMonthDay|(((
169 -"^~-~-(0[1-9]|1[0-2])-(0[1-9]|[12][0-
170 -
171 -9]|3[01])(Z|(\+|-)((0[0-9]|1[0-3]):[0-5][0-
172 -
173 -9]|14:00))?$"
119 +|(% style="width:163px" %)MonthDay|(% style="width:179px" %)xsd:gMonthDay|(% style="width:800px" %)(((
120 +"^~-~-(0[1-9]|1[0-2])-(0[1-9]|[12][0- 9]|3[01])(Z|(\+|-)((0[0-9]|1[0-3]):[0-5][0- 9]|14:00))?$"
174 174  )))
175 -|Month|xsd:Month|(((
176 -"^~-~-(0[1-9]|1[0-2])(Z|(\+|-)((0[0-9]|1[0-
177 -
178 -3]):[0-5][0-9]|14:00))?$"
122 +|(% style="width:163px" %)Month|(% style="width:179px" %)xsd:Month|(% style="width:800px" %)(((
123 +"^~-~-(0[1-9]|1[0-2])(Z|(\+|-)((0[0-9]|1[0- 3]):[0-5][0-9]|14:00))?$"
179 179  )))
180 -|Duration|xsd:duration|(((
181 -"^-?P[0-9]+Y?([0-9]+M)?([0-9]+D)?(T([0-
182 -
183 -9]+H)?([0-9]+M)?([0-9]+(\.[0-9]+)?S)?)?$"
125 +|(% style="width:163px" %)Duration|(% style="width:179px" %)xsd:duration|(% style="width:800px" %)(((
126 +"^-?P[0-9]+Y?([0-9]+M)?([0-9]+D)?(T([0- 9]+H)?([0-9]+M)?([0-9]+(\.[0-9]+)?S)?)?$"
184 184  )))
185 185  
186 186  == {{id name="_Toc291506"/}}4.2 Time and Time Format ==
... ... @@ -238,7 +238,7 @@
238 238  
239 239  This is used to unambiguously state that a date-time represents an observation at a single point in time. Therefore, if one wants to use SDMX for data which is measured at a distinct point in time rather than being reported over a period, the date-time representation can be used.
240 240  
241 -Representation: xs:dateTime (YYYY-MM-DDThh:mm:ss)^^[[^^2^^>>path:#sdfootnote2sym||name="sdfootnote2anc"]]^^
184 +Representation: xs:dateTime (YYYY-MM-DDThh:mm:ss)^^[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)^^2^^>>path:#sdfootnote2sym||name="sdfootnote2anc"]](%%)^^
242 242  
243 243  === {{id name="_Toc291512"/}}4.2.6 Standard Reporting Period ===
244 244  
... ... @@ -312,7 +312,7 @@
312 312  
313 313  Representation: common:ReportingWeekType (YYYY-Www, e.g. 2000-W53)
314 314  
315 -Notes: There are either 52 or 53 weeks in a reporting year. This is based on the ISO 8601 definition of a week (Monday - Saturday), where the first week of a reporting year is defined as the week with the first Thursday on or after the reporting year start day.^^[[^^3^^>>path:#sdfootnote3sym||name="sdfootnote3anc"]]^^ The reporting week is always represented as two digits, therefore 1-9 are 0 padded (e.g. 01). This allows the values to be sorted chronologically using textual sorting methods.
258 +Notes: There are either 52 or 53 weeks in a reporting year. This is based on the ISO 8601 definition of a week (Monday - Saturday), where the first week of a reporting year is defined as the week with the first Thursday on or after the reporting year start day.^^[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)^^3^^>>path:#sdfootnote3sym||name="sdfootnote3anc"]](%%)^^ The reporting week is always represented as two digits, therefore 1-9 are 0 padded (e.g. 01). This allows the values to be sorted chronologically using textual sorting methods.
316 316  
317 317  **Reporting Day**:
318 318  
... ... @@ -346,19 +346,19 @@
346 346  
347 347  This is the [REPORTING_YEAR_START_DATE]
348 348  
349 -1.
292 +1.
350 350  11. **If the [PERIOD_INDICATOR] is W:**
351 351  111. **If [REPORTING_YEAR_START_DATE] is a Friday, Saturday, or Sunday:**
352 352  
353 -Add^^[[^^4^^>>path:#sdfootnote4sym||name="sdfootnote4anc"]]^^ (P3D, P2D, or P1D respectively) to the [REPORTING_YEAR_START_DATE]. The result is the [REPORTING_YEAR_BASE].
296 +Add^^[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)^^4^^>>path:#sdfootnote4sym||name="sdfootnote4anc"]](%%)^^ (P3D, P2D, or P1D respectively) to the [REPORTING_YEAR_START_DATE]. The result is the [REPORTING_YEAR_BASE].
354 354  
355 -1.
356 -11.
298 +1.
299 +11.
357 357  111. **If [REPORTING_YEAR_START_DATE] is a Monday, Tuesday, Wednesday, or Thursday:**
358 358  
359 359  Add^^4^^ (P0D, -P1D, -P2D, or -P3D respectively) to the [REPORTING_YEAR_START_DATE]. The result is the [REPORTING_YEAR_BASE].
360 360  
361 -1.
304 +1.
362 362  11. **Else:**
363 363  
364 364  The [REPORTING_YEAR_START_DATE] is the [REPORTING_YEAR_BASE].
... ... @@ -642,3 +642,5 @@
642 642  Any structural metadata object which contains a reference to an object can be queried based on that reference. For example, a categorisation references both a category and the object is it categorising. As this is the case, one can query for categorisations which categorise a particular object or which categorise against a particular category or category scheme. This mechanism should be used when the referenced object is known.
643 643  
644 644  When the referenced object is not known, then the reference resolution mechanism could be used. For example, suppose one wanted to find all category schemes and the related categorisations for a given maintenance agency. In this case, one could query for the category scheme by the maintenance agency and specify that parent and sibling references should be resolved. This would result in the categorisations which reference the categories in the matched schemes to be returned, as well as the object which they categorise.
588 +
589 +{{putFootnotes/}}