Abstract: In various aspects, a method, system and computer program product provides for concurrent changes to data of a document or a file by a plurality of users at a plurality of user devices. The documents or file may be rendered in JavaScript™ Object Notation (JSON) format. The documents may be patched or changed by employing new functional operations for applying metadata for elements of the arrays associated with the document or file, and to merge changes from made among the various users. The disclosure provides for maintaining and producing new versions of the document or the file, the changes controlled so that data of the arrays are merged atomically and the updates do not fail permitting simultaneous changes to the document or file by multiple users.

Abstract: In various aspects, a method, system and computer program product provides for concurrent changes to data of a document or a file by a plurality of users at a plurality of user devices. The documents or file may be rendered in JavaScript™ Object Notation (JSON) format. The documents may be patched or changed by employing new functional operations for applying metadata for elements of the arrays associated with the document or file, and to merge changes from made among the various users. The disclosure provides for maintaining and producing new versions of the document or the file, the changes controlled so that data of the arrays are merged atomically and the updates do not fail permitting simultaneous changes to the document or file by multiple users.