ISO IEC TR 20821:2018 pdf free
ISO IEC TR 20821:2018 pdf free.Information technology一Learning, education and training一Learning environment components for automated contents adaptation
Layout of learning environment profile schema is identical to CC/PP schema. CC/PP schema definition will comply with the following rules:
1) A schema will be identical to a designated vocabulary. Appropriate RDF standard and unique XML name space [XML-NS] called “prf” will be used. This refers to “xmlns:”, a prefix to XML name space,and it will provide an identifier that is accurate and unambiguous under all circumstances.
2) Other reserved u-Le environment profile list schema XML name space prefixes are:“rdf” and”rdfs”.”ref” and “rdfs” are used only to identify RDF schema name apace of each RDF.
3) Only XML name space declarations defined in mobile learning environment profile list schema will be used. The declaration will be made using the attributes of rdf:RDF route element. No alias of name space can be introduced or used within an overlapped XML element of mobile learning environment profile list schema.
4) Mobile learning environment profile list schema will be composed of one or more CC/PP component(s). Attribute or group of characteristics will be individually explained within one or more RDF description element(s).
5) All components will be RDF type class object that have a unique rdfs:label element within the group of components UAProf schema introduced.
6) All attribute values will have data type and be described in compliance with defined syntax.”Literal” type can be expressed in character string. When interpreting a literal type attribute, upper and lower case characters will be distinguished and spaces at the very first and last of character string will be ignored. The continuous space in the middle of a character string will be treated as prescribed by LWS Rule of HTTP/1.1(Hyper-Text Transfer Protocol). Syntax and value for data type of each attribute are described by mobile learning environment profile list schema.
7) By overwriting the default value, one can add additional description to the schema component. The final value of profile instance attribute is interpreted based on the interpretation rule applicable to such attribute.ISO IEC TR 20821 pdf free download.
