News Column

Patent Issued for Nomadic Data Collection and Management Method Including Pessimistic Locking of Data

June 24, 2014

By a News Reporter-Staff News Editor at Information Technology Newsweekly -- From Alexandria, Virginia, VerticalNews journalists report that a patent by the inventors Bradley, Curtis Allen (Alpharetta, GA); Casper, James Erich (Fuquay-Varina, NC); Harrisson, Teodorico J. (Alpharetta, GA); Newman, Jr., Noah Henry (Marietta, GA); Rae, Jennifer D. (Orange Park, FL); Tung, Paul Kuo-An (Lilburn, GA), filed on May 11, 2006, was published online on June 10, 2014.

The patent's assignee for patent number 8751532 is International Business Machines Corporation (Armonk, NY).

News editors obtained the following quote from the background information supplied by the inventors: "The invention relates to management of distributed database data in a nomadic data collection system, including file access and retrieval, from a centralized data repository by a disconnected nomadic work station. A further aspect of the invention is the management of data coherency, including backing up database information and files, file migration between disconnected work stations, and a high density data repository.

"Nomadicity is the term used to define the transparent, integrated and convenient form of system support needed to provide a rich set of computing and communications capabilities and services to nomads, including either or both of nomadic workers or nomadic workstations, as they move from place to place. Nomadic data collection specifically allows for data packets to be transferred between a generally disconnected workstation and a central repository.

"When updating central data repositories which are not easily accessed, nomadic data collection is employed to facilitate the gathering of information from normally disconnected devices. Nomadic data collection also allows for adding data to a central repository, capturing what exists without regard to or awareness of what already existed.

"In this context a need exists to update central repositories of data which are not easily accessed via a direct connection, that is, nomadic data collection."

As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventors' summary information for this patent: "The method, system, and program product described herein allow updating central data repositories where the repositories are not easily accessed via a direct connection, that is, where some form of nomadic data collection is required. Nomadic data collection allows gathering new information that alters existing information while in a disconnected state. To enable nomadic data collection, the method, system, and program product pessimistically check out available data from the database, and make it available to an individual device, such as a personal computer while in a connected state, where alterations can be made in a subsequent disconnected state.

"Nomadic data collection with pessimistic data check out allows users and devices not continuously connected to a central repository to indicate that they are working with specific seta of data within a repository and enables the addition of new items of data and the update of existing items of data. Nomadic data collection has heretofore been associated with dedicated devices. By way of contrast, the method, system, and program product can be used with general purpose devices.

"The method, system, and program product described herein allow for an individual or device to use an already existing data set while preventing others from substantially simultaneously updating the same set of data. This is particularly appropriate to manage large volumes of data.

"One aspect of the invention is a method of managing a central data repository including updating the central data repository from a disconnected device. By 'central data repository' we include the actual data server, the database management system, and the associated nomadic data communications servers. The first step in this method is the central data repository receiving a request from a first device for access to the data. The central data repository authorizes access to the first device and sends a check out template to the first device. The repository receives back a checkout selection from the first device, authenticates the first device, and presents a list of authorized items to the first device. The repository receives the request for selected items from the list and checks out the selected items to the first device, that is, the repository grants access to the data item and may serve an electronic data entry form to the first device, while simultaneously prohibiting other devices from checking out the same selected items that have been checked out to the first selected device. After checking out the items, the first device disconnects from the repository. The now disconnected first device updates the checked out selected items. After the disconnected device has completed updating the checked out data items, it transmits a check in request to the central data repository. The central repository authenticates the requester and requester, and authorizes the first device to connect and transmit the checked out data, and loads the now updated, checked out selected items back to the central data repository."

For additional information on this patent, see: Bradley, Curtis Allen; Casper, James Erich; Harrisson, Teodorico J.; Newman, Jr., Noah Henry; Rae, Jennifer D.; Tung, Paul Kuo-An. Nomadic Data Collection and Management Method Including Pessimistic Locking of Data. U.S. Patent Number 8751532, filed May 11, 2006, and published online on June 10, 2014. Patent URL:

Keywords for this news article include: Information Technology, Information and Data Aggregation, International Business Machines Corporation.

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Source: Information Technology Newsweekly

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