Search and filtering of documents with different metadata schemata is
enabled using a single index that supports a single schema through
decorated namespaces. Each metadata schema submitted to a system is
assigned a unique identifier and property names associated with the
schema are prefixed with the unique identifier. A single-valued,
decorated property is used to indicate whether a submitted document is
part of a registered schema in the system. The single-valued properties
are converted to a search index table that enables resource-optimized
searching and filtering of documents eliminating documents of other
schemata by simply checking the association property.