Mark F Nielsen

US Patent:

6735582, May 11, 2004

Filed:

Dec 15, 2000

Appl. No.:

09/738238

Inventors:

Kirk Fritsche - Cedar Park TX
Mark David Nielsen - Houston TX
Patrick Edward Nogay - Austin TX
Michael Albert Perks - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1730

US Classification:

707 1, 707 3

Abstract:

A method and system are described in a data processing system including a database for efficiently retrieving copies of data rows from the database. Query criteria is received by a server from a client which specifies search criteria describing data rows and which requests a particular number of the data rows to return. Each of the data rows is associated with a unique primary key which uniquely identifies a particular data object. The primary key for each of the data rows meeting the specified criteria is first retrieved from the database by the server. Thereafter, copies of only the particular number of the data rows are retrieved from the database using the primary keys. Copies of only the particular number of data rows are then returned to the requesting client.

US Patent:

6877159, Apr 5, 2005

Filed:

Jul 27, 2000

Appl. No.:

09/627177

Inventors:

Mark David Nielsen - Houston TX, US
Michael Albert Perks - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F009/46

US Classification:

718104, 718100, 718102, 718103, 718105

Abstract:

An apparatus and method for maintaining object associations in an object oriented environment is provided. The apparatus and method make use of value holders to enable a single method to perform the creation and/or update of object associations for all combinations of possible object associations including one to one associations, one to many associations, many to one and many to many associations.

US Patent:

7305678, Dec 4, 2007

Filed:

May 17, 2001

Appl. No.:

09/859299

Inventors:

Michael Albert Perks - Austin TX, US
Mark David Nielsen - Houston TX, US
Kirk Allan Fritsche - Cedar Park TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 9/44
G06F 7/00
G06F 9/46

US Classification:

719311, 707103 R, 707 8, 718104

Abstract:

A method, a system, an apparatus, and a computer program product are presented for reducing synchronization waits when unique sequential identifiers are being allocated for transactions committed to a database that are occurring in a multi-threaded server environment. A transactional object containing an identifier data item is created for a transaction in an object-oriented environment. A pre-process object is then generated that contains the transactional object; when subsequently processed, the pre-process object allocates a sequential identifier value for the identifier data item. The pre-process object is added to a list of pre-process objects that are to be processed prior to completing the transaction, such as committing the transaction to a database. After some initial business logic processing, a commit operation for the transaction is commenced during which the pre-process object is processed, thereby allocating a sequential identifier value for the identifier data item just prior to committing the transaction.

US Patent:

20020169881, Nov 14, 2002

Filed:

May 10, 2001

Appl. No.:

09/852604

Inventors:

Kirk Fritsche - Cedar Park TX, US
Mark Nielsen - Houston TX, US
Patrick Nogay - Austin TX, US
Michael Perks - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F015/16
G06F015/173

US Classification:

709/229000, 709/225000

Abstract:

A method, apparatus, and computer implemented instructions for accessing a client service in a data processing system. A pool of client services is managed by a server abstraction. A client service instance is assigned from the pool of client services in response to a request from a user application from a plurality of user applications. The user application request on the client service is invoked by the server abstraction. The result from the server service is returned to the user application by client service instance.

US Patent:

20020178146, Nov 28, 2002

Filed:

May 24, 2001

Appl. No.:

09/864111

Inventors:

Raji Akella - Austin TX, US
Mark Nielsen - Houston TX, US
Patrick Nogay - Austin TX, US
Michael Perks - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F009/00
G06F017/30
G06F007/00

US Classification:

707/002000

Abstract:

A system and method for selectively retaining object history using a series of snapshots from a database is claimed. Rules are established for a database file or table to determine snapshot triggers. When a rule is triggered by an event, a snapshot is taken of a predefined set of database data. The snapshot is stored in a separate data area, such as a database table. Snapshots are queried and analyzed to determine historical trends. In addition, snapshot data can be overlaid onto the current database data in order to view changes in the data and also to facilitate record rollback using the snapshot data. When a rollback is requested, the current database record is copied to a new snapshot record and one of the snapshot records is overlaid onto the current database record creating a new database record. A transaction log is also maintained to record details regarding snapshot processing.