Multi-user, multiple tier distributed application architecture with single-user access control of middle tier objects
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United States of America Patent
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Oct 17, 2000
Grant Date -
N/A
app pub date -
Oct 28, 1997
filing date -
Oct 28, 1997
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Abstract
A multi-tier server application architecture provides a simplified programming model of multiple user server applications that enhances programmer productivity. The multi-tier architecture comprises a client tier for client application code that initiates processing by the server application in response to user input, a middle tier of object-oriented server application code, and a database tier of shared access data and management code. A run-time environment for the object-oriented server application code limits access to instantiated objects of the middle tier server application code to a single one of the users. Objects in the middle tier that are instantiated to initiate processing for a particular user and grouped into a collection. The run-time environment manages the flow of execution into the collection such that the collection has only a single logical thread of execution and access by the client application code is exclusive to the particular user.
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