Editing Topic map (section)

==Related standards==
===Topic Maps API===
A de facto [[Application programming interface|API]] standard called Common Topic Maps Application Programming Interface (TMAPI) was published in April 2004 and is supported by many Topic Maps implementations or vendors:
* [http://www.tmapi.org/ TMAPI] – Common Topic Maps Application Programming Interface
* [http://www.tmapi.org/2.0/ TMAPI 2.0] – Topic Maps Application Programming Interface (v2.0)

===Query standard===
In normal use it is often desirable to have a way to arbitrarily query the data within a particular Topic Maps store. Many implementations provide a syntax by which this can be achieved (somewhat like 'SQL for Topic Maps') but the syntax tends to vary a lot between different implementations.  With this in mind, work has gone into defining a standardized syntax for querying topic maps:
* [http://www.isotopicmaps.org/tmql/ ISO 18048: TMQL] – Topic Maps Query Language

===Constraint standards===
It can also be desirable to define a set of constraints that can be used to guarantee or check the semantic validity of topic maps data for a particular domain. (Somewhat like [[database constraints]] for topic maps). Constraints can be used to define things like 'every document needs an author' or 'all managers must be human'. There are often implementation specific ways of achieving these goals, but work has gone into defining a standardized constraint language as follows:
* [http://www.isotopicmaps.org/tmcl/ ISO 19756: TMCL] – Topic Maps Constraint Language

TMCL is functionally similar to [[RDF Schema]] with [[Web Ontology Language]] (OWL).<ref name=Garshol>
{{cite web |url=http://ontopia.net/topicmaps/materials/tmrdf.html#N121 |title=Living With Topic Maps and RDF |author=Lars Marius Garshol |date=2003 |access-date=2014-02-21}}</ref>

===Earlier standards===
The "Topic Maps" concept has existed for a long time. The HyTime standard was proposed as far back as 1992 (or earlier?). Earlier versions of ISO 13250 (than the current revision) also exist. More information about such standards can be found at the ISO Topic Maps site.{{CN|date=March 2023}}