When Using the Relational Notation,the Primary Key Attribute Is Indicated

question 109

True/False

When using the relational notation,the primary key attribute is indicated by a dashed underline.

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Definitions:

Devonian Extinction

A series of global events leading to significant reductions in biodiversity at the close of the Devonian period around 359 million years ago.

Permian Extinction

A prehistoric global event occurring about 252 million years ago, marking the boundary between the Permian and Triassic geological periods, characterized by the most significant extinction event in Earth's history where nearly 90% of marine species and 70% of terrestrial species died out.

Marsupials

Members of the mammal infraclass Marsupialia, characterized by birthing relatively undeveloped offspring that often complete their development in the maternal pouch.

Habitat Loss

The destruction, degradation, and fragmentation of natural environments, leading to a decline in biodiversity.