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4、on): -.3.2 (association role): , .3.3 (association role type): , .3.4 (association type): , , - .3.5 (information resource): - ; .3.6 (item identifier): , -, .1) / 13250-2:2006 / 13250-3:2007. / 13250-22012 / 13250-2201223.7 (locator): , , - .3.8 (merging): , - .3.9 (occurrence): .3.10 (occurrence t
5、ype): , - , .3.11 (reification): , .3.12 (scope): , .3.13 (statement): ( ).3.14 (subject): , , , - , - - .3.15 (subject identifier): , .3.16 (subject indicator): , , - .3.17 (subject locator): , , .3.18 (topic): , .3.19 (topic map): .3.20 (topic map construct): ; , , , , , , - .3.21 (topic map): - .
6、3.22 (topic name): , , , , .3.23 (topic name type): , .3.24 (topic type): , .3.25 (unconstrained scope): , - , -.3.26 (variant name): , - , . , .4 4.1 , - XML 1. , . - , - , . - , , . / 13250-220123 , 1 , : . , . , . ; , , . , -. . . , , . - , . - , , , - , . , . UML 2 (. 1). - . 1 -, UML. UML, - . , , - .4.2 ; , . . ; . / 13250-220124 , . , -. . , 3 4.4.3 -, :String Unicode (. 10646 5). , - Unicode. 1 Unicode , , -. , . , .Set , - . . , , - .Null , , ; , . , , No Value ( ) 1. - . ( ); .Locator , . , Unicode. 2 Unicode , , . ,
