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4 cards from this section. Quick, good the night before a test.
Define the three levels of DBMS architecture.
Think about how each level addresses different user needs.
What does the internal level focus on?
Consider what happens behind the scenes of a database.
What are the three levels of DBMS architecture?
Think about how data is organized.
True or False: The external level allows changes to be made without affecting the internal level.
Consider data independence.
Discuss how changing the structure of the conceptual level could impact both the internal and external levels. Provide examples to support your answer.
Consider the implications of altering database organization.
Design a simple DBMS structure using the three-level architecture for an online shopping site. What challenges might arise from changes at each level?
Think of how an online shopping experience varies for customers versus admin.
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