====== 2.3.4.3.3 External Data ======
[[dido:public:ra:1.2_views:3_taxonomic:4_data_tax:start|return to Data Taxonomy]]

External data is data that is neither [[dido:public:ra:1.2_views:3_taxonomic:4_data_tax:03_digi_taxonomy:1_ledger| ledger data]] nor [[dido:public:ra:1.2_views:3_taxonomic:4_data_tax:03_digi_taxonomy:2_ancillary|ancillary data]] but is required within the [[dido:public:ra:xapend:xapend.a_glossary:b:blockchain|blockchain]] or [[dido:public:ra:xapend:xapend.a_glossary:s:smart_contract|smart contracts]]. External data is accessed using an [[dido:public:ra:xapend:xapend.a_glossary:o:oracle|oracle]]. There are numerous formats for external data sources: data files, databases, [[dido:public:ra:xapend:xapend.a_glossary:r:rss|rich site summary (RSS)]] feeds, RESTful interfaces, etc.

===== Standards =====
==== Technical Standards ====
  * [[dido:public:ra:xapend:xapend.b_stds:tech:omg:dds]]
  * [[dido:public:ra:xapend:xapend.b_stds:tech:ietf:json]]
  * [[dido:public:ra:xapend:xapend.b_stds:tech:w3c:html5]]
  * [[dido:public:ra:xapend:xapend.b_stds:defact:linuxf:openmsg]]
  * [[dido:public:ra:xapend:xapend.b_stds:defact:linuxf:openmama]]

==== de facto Standards ====
  * None at this time

===== Tools =====
  * None at this time

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