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Last modified by Artur on 2025/08/19 10:43
From version 4.5
edited by Helena
on 2025/05/21 21:31
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To version 4.9
edited by Helena
on 2025/05/21 21:33
Change comment: There is no comment for this version

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... ... @@ -121,24 +121,27 @@
121 121  
122 122  A..Z (upper case alphabetic), 0..9 (numeric), _ (underscore)
123 123  
124 -1. **Observation values** are:
125 -1*. Decimal numerics (signed only if they are negative);
126 -1*. The maximum number of significant figures is:
127 -1*. 15 for a positive number
128 -1*. 14 for a positive decimal or a negative integer
129 -1*. 13 for a negative decimal
130 -1*. Scientific notation may be used.
131 -1. **Uncoded statistical concept** text values are:
132 -1*.
133 -1**. Maximum 1050 characters;
134 -1**. From ISO 8859-1 character set.
135 -1. **Time series keys**:
124 +**5. Observation values** are:
136 136  
137 -In principle, the maximum permissible length of time series keys used in a data exchange does not need to be restricted. However, for working purposes, an effort is made to limit the maximum length to 35 characters; in this length, also (for SDMXEDI) one (separator) position is included between all successive dimension values; this means that the maximum length allowed for a pure series key (concatenation of dimension values) can be less than 35 characters.  The separator character is a colon (“:”) by conventional usage.
126 +* Decimal numerics (signed only if they are negative);
127 +* The maximum number of significant figures is:
128 +* 15 for a positive number
129 +* 14 for a positive decimal or a negative integer
130 +* 13 for a negative decimal
131 +* Scientific notation may be used.
138 138  
133 +**6. Uncoded statistical concept** text values are:
134 +
135 +* Maximum 1050 characters;
136 +* From ISO 8859-1 character set.
137 +
138 +**7. Time series keys**:
139 +
140 +In principle, the maximum permissible length of time series keys used in a data exchange does not need to be restricted. However, for working purposes, an effort is made to limit the maximum length to 35 characters; in this length, also (for SDMXEDI) one (separator) position is included between all successive dimension values; this means that the maximum length allowed for a pure series key (concatenation of dimension values) can be less than 35 characters. The separator character is a colon (“:”) by conventional usage.
141 +
139 139  == 3.4 SDMX-ML and SDMX-EDI Best Practices ==
140 140  
141 -=== 3.4.1 Reporting and Dissemination Guidelines ===
144 +=== 3.4.1 Reporting and Dissemination Guidelines ===
142 142  
143 143  **3.4.1.1 Central Institutions and Their Role in Statistical Data Exchanges **Central institutions are the organisations to which other partner institutions "report" statistics. These statistics are used by central institutions either to compile aggregates and/or they are put together and made available in a uniform manner (e.g. on-line or on a CD-ROM or through file transfers). Therefore, central institutions receive data from other institutions and, usually, they also "disseminate" data to individual and/or institutions for end-use.  Within a country, a NSI or a national central bank (NCB) plays, of course, a central institution role as it collects data from other entities and it disseminates statistical information to end users. In SDMX the role of central institution is very important: every statistical message is based on underlying structural definitions (statistical concepts, code lists, DSDs) which have been devised by a particular agency, usually a central institution. Such an institution plays the role of the reference "structural definitions maintenance agency" for the corresponding messages which are exchanged. Of course, two institutions could exchange data using/referring to structural information devised by a third institution.
144 144  
... ... @@ -218,10 +218,12 @@
218 218  * its content and description
219 219  * the relevant DSD that defines the structure of the data reported or disseminated according the the dataflow definition
220 220  
221 -**3.4.1.3 Exchanging Attributes**
224 +==== 3.4.1.3 Exchanging Attributes ====
222 222  
223 -**//3.4.1.3.1 Attributes on series, sibling and data set level //**//Static properties//.
226 +===== //3.4.1.3.1 Attributes on series, sibling and data set level // =====
224 224  
228 +//Static properties//.
229 +
225 225  * Upon creation of a series the sender has to provide to the receiver values for all mandatory attributes. In case they are available, values for conditional attributes  should also be provided. Whereas initially this information may be provided by means other than SDMX-ML or SDMX-EDI messages (e.g. paper, telephone) it is expected that partner institutions will be in a position to provide this information in SDMX-ML or SDMX-EDI format over time.
226 226  * A centre may agree with its data exchange partners special procedures for authorising the setting of attributes' initial values.
227 227  * Attribute values at a data set level are set and maintained exclusively by the centre administrating the exchanged data set.