Ching Ho Liu

US Patent:

49611399, Oct 2, 1990

Filed:

Jun 30, 1988

Appl. No.:

7/213578

Inventors:

Le Thieu Hong - Fremont CA
Cynthia Givens - Sunnyvale CA
Ching Chao Liu - Sunnyvale CA
Michael J. Wright - Los Gatos CA
Feyzi Fatehi - Sunnyvale CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G06F 1540
G06F 1200

US Classification:

364200

Abstract:

A real-time database provides the predictable, high speed data access required for on-line applications, while providing flexible searching capabilities. The data retrieval routines include the option to "read-through-lock" to access data in locked data tables, the capability to directly access to data using tuple identifiers, and the capability to directly access unformatted data from input areas which contain blocks of unformatted data. The data updating routines include an option to omit index updating when updating data and an option to update data in a locked data table. Multiple indexes can be defined for a data table. Thus, high speed searches can be performed based on a variety of data fields. The data storage and retrieval mechanisms are independent and there are hash index tables that connect the multiple index keys to the data tables. The data table structure includes a column defined for storing tuple identifier strings.

Address:

4621 Regalo Bello St, Las Vegas, NV 89135

VIN:

JTHBJ46G572049810

Make:

LEXUS

Model:

ES 350

Year:

2007