A Key Is a Field That Identifies a Unique Column

question 105

True/False

A key is a field that identifies a unique column in a table.

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Definitions:

Spin-Spin Splitting

A phenomenon in NMR spectroscopy where a nucleus's magnetic field is split by the magnetic fields of neighboring nuclei.

Chemical Shift

A term used in nuclear magnetic resonance (NMR) spectroscopy to describe the change in magnetic resonance frequency of a nucleus due to its chemical environment.

Sample Proportions

The fraction or percentage of the sample that represents a particular trait or characteristic of interest.

Control Chart

A graphical tool for monitoring process stability and variability by plotting measured values against predetermined control limits.