International Business Machines Corporation

Linnette M Bakow

Jacques Labrie

Tom William Jacopi

Shannon Matthew Farrington

Jean-Jacques Paul Daudenarde

Cheung-Yuk Wu

Thanh Vu Nguyen

Diane Friedman

Giuseppe Facchetti

A multiple task wait system and associated method allow a client application to wait for multiple tasks to be successfully or conditionally implemented before running subsequent tasks. Two mechanisms can be used to accomplish this multiple wait process: The first mechanism uses a multi-wait grouping process that is visible to the client, and the second mechanism uses a graphical representation to identify the tasks to be completed. The multi-wait grouping process allows a client to group a related set of tasks together for both control and documentation purposes. The client can add as many tasks as the resources of the computer allow to a group while defining the data flows and control flows between the tasks in the group using various graphical tools. The multi-wait system allows the client to define the constraints and conditions for a set of tasks to be considered complete, and further allows the system to define the constraints and conditions for considering all the tasks within the group to be completed. By utilizing the group concept, the system can selectively control the tasks to be included in the completion decision based on predefined rules.

Multiple task wait system for use in a data warehouse environment

A method, apparatus, and article of manufacture for a scalable data warehouse architecture. A query is executed in a computer to retrieve data from a database stored on a data storage device. Under control of a manager server, one of a plurality of agent servers is selected to execute the query based upon availability of each agent server and based upon connections between each agent server and a data source and a data target required for execution of the query.

Manager server selects an agent server to execute query based on

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Linnette M Bakow