London Market Implementation of ACORD DRI Messages and Data
validated by other mechanisms.
The hierarchical structure of the schema tree
Order - element children can be grouped as ordered (Sequence) or un-ordered (All).
Alternative - element children can be grouped as mutually exclusive (Choice).
Elements can be specified as:
Optional and not repeatable ( 0..1)
Optional and repeatable (0..*)
Mandatory and not repeatable (1)
Mandatory and repeatable (1..*)
The data type of an element may be specified. e.g. date, string, long
New data types may be defined based on a restricted extension to a primitive data type.
The content of an element may be further restricted:
Facets: e.g. minimum, maximum, length
Patterns: range of values or pattern mask
Enumerations: a list of allowable values
Elements may be referenced with an identifier allowing simple indexed joins within the XML
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