Boots – shoes – and leggings
Patent
1987-03-05
1989-07-04
Shaw, Gareth D.
Boots, shoes, and leggings
3642821, G06F 700
Patent
active
048456241
ABSTRACT:
The present invention is directed to a relational data base system which is operating in a virtual machine environment. The invention provides a system that includes a disconnected virtual machine which is running in the same virtual machine environment as is the relational data base. Insert and Update requests to the system are generated by programs running in user controlled virtual machines. Other users issue select and view requests which lock out insert and update requests which relate to the same data domain. With the present invention Insert and Update requests go to the disconnected virtual machine which ques them and applies them against the relational data base in the order that the requests are received. In this way, while a select is being executed on data in a particular domain of the data base, update and insert request for the same domain will be held by the virtual machine and the operator will not be "locked out" of the system.
REFERENCES:
patent: 4096561 (1978-06-01), Trinchieri
patent: 4564903 (1986-01-01), Guyette et al.
patent: 4627019 (1986-12-01), Ng
patent: 4660144 (1987-04-01), Walsh
patent: 4694396 (1987-09-01), Weisshaar et al.
patent: 4714992 (1987-12-01), Gladney et al.
Clayton Neil H.
Rivero Jose L.
Sun Kuo-chang
Bee Richard E.
Galbi Elmer W.
International Business Machines - Corporation
Jaffe Michael A.
Shaw Gareth D.
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