Patents by Inventor Robbert C. Van der Linden
Robbert C. Van der Linden has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9600597Abstract: A method, computer readable medium, and system for processing a structured document are disclosed. The method, computer readable medium, and system include identifying a plurality of strings processed by a database, assigning an identifier to each of the plurality of strings, storing each of the plurality of strings and its assigned identifier in a table in the database, and utilizing the table during document processing.Type: GrantFiled: September 22, 2011Date of Patent: March 21, 2017Assignee: International Business Machines CorporationInventors: Henrik Loeser, Robbert C. Van der Linden, Brian S. Vickery
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Patent number: 9495553Abstract: An improved method and system for providing path-level access control to a structured document in a collection stored in a database, where the structured document includes a plurality of nodes is disclosed. The method includes the steps of providing an access control policy for the collection, where the access control policy comprises a plurality of access control rules, generating a path for each node of the plurality of nodes in the document, and generating for each path associated with a node a corresponding value expression based on at least one access control rule of the plurality of access control rules. According to the method and system of the present invention, the corresponding value expression is utilized during access control evaluation to determine whether a user is allowed to access a node in the structured document.Type: GrantFiled: July 8, 2014Date of Patent: November 15, 2016Assignee: International Business Machines CorporationInventors: Satoshi Hada, Michiharu Kudo, Naishin Seki, Akihiko Tozawa, Robbert C. Van Der Linden
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Publication number: 20140324834Abstract: An improved method and system for providing path-level access control to a structured document in a collection stored in a database, where the structured document includes a plurality of nodes is disclosed. The method includes the steps of providing an access control policy for the collection, where the access control policy comprises a plurality of access control rules, generating a path for each node of the plurality of nodes in the document, and generating for each path associated with a node a corresponding value expression based on at least one access control rule of the plurality of access control rules. According to the method and system of the present invention, the corresponding value expression is utilized during access control evaluation to determine whether a user is allowed to access a node in the structured document.Type: ApplicationFiled: July 8, 2014Publication date: October 30, 2014Inventors: Satoshi HADA, Michiharu KUDO, Naishin SEKI, Akihiko TOZAWA, Robbert C. VAN DER LINDEN
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Patent number: 8775468Abstract: An improved method and system for providing path-level access control to a structured document in a collection stored in a database, where the structured document includes a plurality of nodes is disclosed. The method includes the steps of providing an access control policy for the collection, where the access control policy comprises a plurality of access control rules, generating a path for each node of the plurality of nodes in the document, and generating for each path associated with a node a corresponding value expression based on at least one access control rule of the plurality of access control rules. According to the method and system of the present invention, the corresponding value expression is utilized during access control evaluation to determine whether a user is allowed to access a node in the structured document.Type: GrantFiled: August 29, 2003Date of Patent: July 8, 2014Assignee: International Business Machines CorporationInventors: Satoshi Hada, Michiharu Kudo, Naishin Seki, Akihiko Tozawa, Robbert C. Van der Linden
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Patent number: 8250093Abstract: An improved method and system for performing path-level access control evaluation for a structured document in a collection, where the structured document includes a plurality of nodes and each of the nodes is described by a path, is disclosed. The method comprises providing a cache for temporarily storing a cache entry for a path associated with a node of the plurality of nodes, receiving a query that includes a request to access the node, checking the cache entry for the path associated with the node, and determining whether to grant access to the node based on the cache entry.Type: GrantFiled: August 25, 2003Date of Patent: August 21, 2012Assignee: International Business Machines CorporationInventor: Robbert C. Van der Linden
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Patent number: 8150818Abstract: A method, computer readable medium, and system for storing a structured document in its native format in a database are provided. The method, computer readable medium, and system include receiving the structured document, generating a hierarchical node tree comprising a plurality of nodes, where the node tree represents the structured document, and storing the plurality of nodes in at least one record in the database.Type: GrantFiled: August 25, 2003Date of Patent: April 3, 2012Assignee: International Business Machines CorporationInventors: Robbert C. Van Der Linden, Brian S. Vickery
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Publication number: 20120011136Abstract: A method, computer readable medium, and system for processing a structured document are disclosed. The method, computer readable medium, and system include identifying a plurality of strings processed by a database, assigning an identifier to each of the plurality of strings, storing each of the plurality of strings and its assigned identifier in a table in the database, and utilizing the table during document processing.Type: ApplicationFiled: September 22, 2011Publication date: January 12, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Henrik Loeser, Robbert C. Van der Linden, Brian S. Vickery
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Patent number: 8037090Abstract: A method, computer readable medium, and system for processing a structured document are disclosed. The method, computer readable medium, and system include identifying a plurality of strings processed by a database, assigning an identifier to each of the plurality of strings, storing each of the plurality of strings and its assigned identifier in a table in the database, and utilizing the table during document processing.Type: GrantFiled: March 5, 2009Date of Patent: October 11, 2011Assignee: International Business Machines CorporationInventors: Henrik Loeser, Robbert C. Van der Linden, Brian S. Vickery
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Patent number: 7921191Abstract: Disclosed is a system and program for managing schemas. A schema and one or more associated schema documents are registered. A schema information document is automatically generated based on the schema and the one or more associated schema documents. A request to be performed on at least one of the schema, an associated schema document, and the schema information document is processed.Type: GrantFiled: August 21, 2008Date of Patent: April 5, 2011Assignee: International Business Machines CorporationInventors: Bruce A. Benfield, Daniel T. Chang, Mary C. Lehner, Sundararaman Saiprasad, Robbert C. Van der Linden
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Patent number: 7792866Abstract: A method and system for querying a structured document stored in its native format in a database, where the structured document includes a plurality of nodes that form a hierarchical node tree, is disclosed. The method includes providing at least one child pointer in each of the plurality of nodes, where the at least one child pointer points to a corresponding child node of the plurality of nodes, and storing a hint in each of the at least one child pointers. The hint is then utilized to navigate the hierarchical node tree during query evaluation.Type: GrantFiled: August 25, 2003Date of Patent: September 7, 2010Assignee: International Business Machines CorporationInventors: Robbert C. Van Der Linden, Stefan Tobias Mayr, Brain S. Vickery
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Publication number: 20090171926Abstract: A method, computer readable medium, and system for processing a structured document are disclosed. The method, computer readable medium, and system include identifying a plurality of strings processed by a database, assigning an identifier to each of the plurality of strings, storing each of the plurality of strings and its assigned identifier in a table in the database, and utilizing the table during document processing.Type: ApplicationFiled: March 5, 2009Publication date: July 2, 2009Applicant: International Business Machines CorporationInventors: Henrik Loeser, Robbert C. Van der Linden, Brian S. Vickery
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Patent number: 7512608Abstract: A method for processing a structured document are disclosed. The method includes identifying a plurality of strings processed by a database, assigning an identifier to each of the plurality of strings, storing each of the plurality of strings and its assigned identifier in a table in the database, and utilizing the table during document processing.Type: GrantFiled: September 11, 2006Date of Patent: March 31, 2009Assignee: International Business Machines CorporationInventors: Henrik Loeser, Robbert C. Van der Linden, Brian S. Vickery
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Publication number: 20080313219Abstract: Disclosed is a system and program for managing schemas. A schema and one or more associated schema documents are registered. A schema information document is automatically generated based on the schema and the one or more associated schema documents. A request to be performed on at least one of the schema, an associated schema document, and the schema information document is processed.Type: ApplicationFiled: August 21, 2008Publication date: December 18, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Bruce A. Benfield, Daniel T. Chang, Mary C. Lehner, Sundararaman Saiprasad, Robbert C. Van der Linden
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Patent number: 7433940Abstract: Disclosed is a method, system, and program for managing schemas. A schema and one or more associated schema documents are registered. A schema information document is automatically generated based on the schema and the one or more associated schema documents. A request to be performed on at least one of the schema, an associated schema document, and the schema information document is processed.Type: GrantFiled: January 21, 2004Date of Patent: October 7, 2008Assignee: International Business Machines CorporationInventors: Bruce A. Benfield, Daniel T. Chang, Mary C. Lehner, Sundararaman Saiprasad, Robbert C. Van der Linden
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Patent number: 7171430Abstract: An improved method and system for processing a structured document stored in a database is disclosed. The method includes identifying strings that are processed by the database, assigning an identifier to each of the strings, storing each of the strings and the assigned identifier in a table in the database, where the table is a global database table, and utilizing the table to replace the strings with their assigned identifiers throughout the database, where the identifiers are used during document processing.Type: GrantFiled: August 28, 2003Date of Patent: January 30, 2007Assignee: International Business Machines CorporationInventors: Henrik Loeser, Robbert C. Van der Linden, Brian S. Vickery
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Patent number: 6604102Abstract: The SQL compiler and SQL executor in a database management system are extended to process queries requiring streaming mode processing of data stored in a table. A scan operator performs table access functions during execution of the streaming mode query. The scan operator first performs an initial scan to access rows in a specified database table, and then performs a delta scan to access new rows added to the table, as well as rows modified by other queries. The scan operator continues to process new data added to the table until the initiating user or application closes the associated cursor. A set of data structures are provided to keep track of active scan operators, including a session control block that includes fields for keeping track of whether the scan operator is performing an initial scan or a delta scan. The session control block also includes, for streaming mode scan operators, a delta scan list of new and modified rows to be processed in the delta scan.Type: GrantFiled: November 29, 2001Date of Patent: August 5, 2003Assignee: Hewlett-Packard Development Company, LP.Inventors: Johannes Klein, Robbert C. Van der Linden, Raj K. Rathee, Hansjorg Zeller
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Patent number: 6453313Abstract: The SQL compiler and SQL executor in a database management system are extended to execute statements for dequeuing rows from a database table and statements that both updating tuples and return those tuples to a calling application. During execution of a select statement that includes an embedded update or delete operation, a table access operator accesses a defined range of rows in a database table. The table access operator receives from a calling application a request for rows dequeued from the database table. The table access operator responds to the requests for rows by returning to the calling application qualifying rows, if any, from the database table and also by performing the embedded delete or update operation. The SQL executor returns control to the calling application only after all rows deleted or updated by the table access operator have been sent to the calling application.Type: GrantFiled: July 6, 1999Date of Patent: September 17, 2002Assignee: Compaq Information Technologies Group, L.P.Inventors: Johannes Klein, Robbert C. Van der Linden, Raj K. Rathee
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Patent number: 6397227Abstract: A database management system includes an execution engine that, upon rollback of an aborted transaction, has the ability to set fields of the rows that are updated or deleted by the transaction prior to aborting. In particular, when a select, update or delete statement includes a “set on rollback” clause, the respective table access operator of the execution engine modifies the “before image” of each row that is stored by the transaction log manager. The modified before image includes the field updates specified by the set on rollback clause. If a transaction associated with the statement aborts, when the transaction log manager restores the before images of each row that was deleted or updated by the transaction, the restored before images include the field updates specified by the set on rollback clause.Type: GrantFiled: July 6, 1999Date of Patent: May 28, 2002Assignee: Compaq Computer CorporationInventors: Johannes Klein, Robbert C. Van der Linden, Raj K. Rathee, Anoop Sharma
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Publication number: 20020038313Abstract: The SQL compiler and SQL executor in a database management system are extended to process queries requiring streaming mode processing of data stored in a table. A scan operator performs table access functions during execution of the streaming mode query. The scan operator first performs an initial scan to access rows in a specified database table, and then performs a delta scan to access new rows added to the table, as well as rows modified by other queries. The scan operator continues to process new data added to the table until the initiating user or application closes the associated cursor. A set of data structures are provided to keep track of active scan operators, including a session control block that includes fields for keeping track of whether the scan operator is performing an initial scan or a delta scan. The session control block also includes, for streaming mode scan operators, a delta scan list of new and modified rows to be processed in the delta scan.Type: ApplicationFiled: November 29, 2001Publication date: March 28, 2002Applicant: Compaq Computer CorporationInventors: Johannes Klein, Robbert C. Van der Linden, Raj K. Rathee, Hansjorg Zeller
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Patent number: 6349310Abstract: In a database management system, when the table to be accessed by a statement is partitioned, a respective partition scan operator is used to access rows of each respective database table partition. A fan out operator receives requests from a calling application to access rows from table, and responds by sending requests for rows to the partition scan operators. It receives rows of the table from the partition scan operators and sends the received rows of the database table to another node in the execution tree. Each of the partition scan operators responds to the requests for rows by returning to the fan out operator qualifying rows, if any, from the corresponding table partition. If the statement being executed includes an embedded delete or update operation, the qualifying rows are deleted or updated at the same time that the qualifying rows are returned to the fan out operator.Type: GrantFiled: July 6, 1999Date of Patent: February 19, 2002Assignee: Compaq Computer CorporationInventors: Johannes Klein, Robbert C. Van der Linden, Raj K. Rathee