Which of the Following Is True About the Database Development

question 100

Multiple Choice

Which of the following is true about the database development process?

• A) The easiest time to change the database structure is during the data modeling stage.
• B) Changing a relationship from 1:N to N:M in an existing database is simply a matter of changing notations.
• C) User review of the data model is avoided as it is not helpful in data modeling.
• D) A database is a model of how the developers view their business world.

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Definitions:

Erythrocyte Sedimentation Rate (ESR)

A blood test that measures how quickly erythrocytes (red blood cells) settle at the bottom of a test tube that contains a blood sample.

Hematocrit (HCT)

A test measuring the proportion of red blood cells in the blood, indicating overall health and possible conditions like anemia.

Erythropoietin

A hormone produced by the kidneys that promotes the formation of red blood cells by the bone marrow.

Lymph Nodes

Small, bean-shaped structures that filter lymphatic fluid and trap pathogens and foreign particles as part of the immune system.