A Level Zero Data Flow Diagram Contains a Rectangle Labeled

question 35

Multiple Choice

A Level Zero data flow diagram contains a rectangle labeled "vendor." Which of the following is most true?

• A) The rectangle does not require a database table.
• B) The rectangle indicates a database with a compound primary key.
• C) The associated database requires a junction table.
• D) The primary key for the indicated database may be a foreign key elsewhere.

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Definitions:

Dynamic-systems Approach

A theoretical perspective in developmental psychology that emphasizes the ever-changing nature of humans and their environments, focusing on how change occurs over time through a complex interaction of processes.

Theory of Evolution

A scientific explanation for the diversity of life, stating that species change over time through natural selection and genetic variations.

Domino Effect

A phenomenon where a change or event causes a successive series of similar changes or events.

Lev Vygotsky

A Soviet psychologist renowned for his theory on social development and the concept of the Zone of Proximal Development, emphasizing the impact of social interaction on learning.