Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

A User Defined Concentration Scale Based on a Given Mathematical Function

IP.com Disclosure Number: IPCOM000110695D
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 1 page(s) / 67K

Publishing Venue

IBM

Related People

Li, SG: AUTHOR [+2]

Abstract

When range selectable number lines with concentration information are used for database query formulation, the concentration scale is usually defined by the internal system. The scale is evenly divided into a certain number of units and each unit covers an equal number of possible values. However, this uniform scale may not be proper for number lines that should show the concentration information based on the particular property of a column of a database table. For example, there exist scientific data that are stored in their absolute values but are conventionally shown logarithmically. For this type of information, a concentration scale based on a logarithmic function for their number lines is preferred.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 56% of the total text.

A User Defined Concentration Scale Based on a Given Mathematical Function

      When range selectable number lines with concentration
information are used for database query formulation, the
concentration scale is usually defined by the internal system.  The
scale is evenly divided into a certain number of units and each unit
covers an equal number of possible values.  However, this uniform
scale may not be proper for number lines that should show the
concentration information based on the particular property of a
column of a database table.  For example, there exist scientific data
that are stored in their absolute values but are conventionally shown
logarithmically.  For this type of information, a concentration scale
based on a logarithmic function for their number lines is preferred.
This disclosure describes a design that allows users to specify a
mathematical function for determining the concentration scale for a
number line with concentration information in a query formulation.

      When a number line with concentration information is used for a
column X that is conventionally shown in a value from F(X) where F()
is a mathematical function, it is preferred to show the number line
with a concentration scale based on F().  For example, column
POLLUTION_COUNT stores data of air pollution reading directly
acquired from a reader device and the pollution data are usually
displayed in their LOG() values.  Thus, the user can choose not to
use the default conc...