Discussion
A tool that can help designers understand the dependencies of database structures is a:
Answer: A
Correct answer: dependency graph.
A dependency graph shows the database’s structures as nodes and their dependencies as arcs, so that before changing anything the designer can see what refers to it - the views, constraints, triggers, stored procedures and application queries that would break. It is the tool that turns “what does this column touch?” from a search into a reading.
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