In an Entity-Relationship Diagram, a Vertical Bar on the Lines

question 10

True/False

In an entity-relationship diagram, a vertical bar on the lines indicates that at least one entity of that type is required in the relationship.

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Definitions:

Safranin

A bright red dye used in histology and cytology to stain cell nuclei red, often as a counterstain in various staining protocols, including Gram staining.

Decolorizer

A chemical agent used to remove color in staining or laboratory procedures.

Aerobic

Aerobic refers to processes or activities that require the presence of oxygen, such as aerobic exercise which improves cardiovascular conditioning.

Anaerobic

Relating to or involving processes that occur without the presence of oxygen, especially in the context of exercise or bacterial growth.