Hewlett-packard Development Company, L.P.

Mark Henry Butler

David Murray Banks

John S Erickson

Scott Alan Stanley

Ruel Calalo

A digital repositoryincludes data items. A user can add additional functionality or program routines to data item by including as a data item a data processing identifier pointing to at least one data processing routine. Such routines are accessed by a clientby sending from a client to the digital repositorya request to access a data item, wherein the repository provides an interface description documentfrom the digital repositoryto the clientas the response to the request. The clientcan then transmit a data processing request from the client to a serviceidentified by the data processing identifier of the interface description document, the data processing request including the identifier from the interface description document.

Database extension structure

A directed graph of data includes nodes, propertiesattached to nodes and resources. The nodes, propertiesand resourcesare classified as indexable or non indexable. At least one propertylinks a pair of nodes, one node being a parent and one being a child. An indexing algorithm indexes each indexable property pointing to a resource as related to any respective indexable nodes linked to the node to which the indexable property is attached through a chain of indexable links from child to parent through intermediate nodes, all of which are non-indexable.

Indexing for data having indexable and non-indexable parent nodes

A client acceptsan input query, rewritesthe query and forwardsthe query to a database server, which returnsresults which are then rewritten. The database includes classes arranged hierarchically as superclasses and subclasses, and/or properties also arranged hierarchically as superproperties and subproperties. In embodiments, the query is rewrittento replace each instance of each class and each property in the input query with the transitive closure of the respective class or property. The client allows inferencing whether or not this is supported by the database server.

Client and method for database

A database structure that may be used for semistructured databases assigns each node of a database to a collection. For each collection, create rights, retrieve rights, associate rights and dissassociate rights are provided to one or more users, the rights being assigned in common for all nodes of the collection. Users can only carry out the task if they have the appropriate rights. In this way, a flexible database security structure is provided that can deliver appropriate security for different elements of a semistructured database.

Database security structure

A hierarchical digital signature method is provided by which different levels of data elements of a data entry are processed in turn to derive function values (for example hash function values) for data elements in the level which are to form part of the digital signature. All function values for one level are combined in a further function to provide an additional function value, and the additional function value is used in the processing of data elements in the next level nearer to the root. This provides a digital signature which can use only selected data elements of a data entry, and which is not sensitive to the ordering of the data entry structure.

Method of digitally signing data and a data repository storing digitally signed data

Software () which when run on a processor () of a networked resource server (') reads delivery context aware related data from a contact log of said server and processes said data to produce processed acquired data relating to delivery context aware requests for resources made of the server, and which software causes said processed acquired data to be transmitted out of a network port () of the server proactively, without an input trigger signal from outside of the server.

Delivery context aware activity on networks: devices, software, and methods

A method of enabling a plurality of entities to have sufficient information concerning at least one device and at least one content item, such that each individual entity can arbitrate concerning a performance of said device and said content, on the basis of said device information and said content information.

Growing community of inventors

Bristol, United Kingdom

Mark Henry Butler