What Is a Foreign Key? Provide an Example

question 4

Essay

What is a foreign key? Provide an example.

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Definitions:

Magnifying Capacity

The ability of an optical instrument, such as a microscope or telescope, to make an object appear larger or closer than it actually is.

Phase-Contrast

A microscopy technique that converts phase shifts in light passing through a transparent specimen to brightness changes in the image.

Confocal Fluorescence

A microscopy technique that uses laser light to illuminate a fluorescently labeled sample at specific depths, generating sharp images of structures within cells and tissues.

Transmission Electron

A microscopy technique in which a beam of electrons is transmitted through a specimen to form an image, providing high-resolution views of ultrastructural details.