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Disadvantages of the database approach

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Give four examples of meta-data for the data item value "ISYS 464".
Describe (don't just list) two disadvantages of the database approach.
What is the difference between an enterprise data model and a project-level data model?
What is the difference between a relationship instance and a relationship type? Give one example of each that is not from the textbook.
On an ER diagram, how would you represent a zero-to-zero (0:0) cardinality ratio between two entity types?
What does it mean if the answer to the disjointness constraint question is "No"? Give one example of this.
What is the only difference in the resulting logical schema if an associative entity's identifier is assigned versus if it is not assigned?
What three constructs from an ER diagram would require you to make a relation in a logical schema?

Reference no: EM133154403

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