US Patent 11068536 Method and apparatus for managing a document index

Embodiments of the present disclosure relate to a method and apparatus for managing a document index. The method comprises determining an independently updatable field in a plurality of documents, the independently updatable field comprising at least one item. The method further comprises creating an index for an item in the independently updatable field, the index containing an identifier of a document comprising the item, the document being included in the plurality of documents. Furthermore, the method further comprises storing the identifier of the document in blocks such that the index is updatable without modifying the identifier of the document.