A data model for a database is often depicted using entity-relationship diagrams.
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Q19: The centralized database approach to data management
Q20: Business processes, such as hiring employees, purchasing
Q21: A partial dependency happens when an attribute
Q22: An attribute is equivalent to a field
Q23: A secondary key uniquely identifies any row
Q25: Data mining refers to the exploration, aggregation,
Q26: The normalization process involves the application of
Q27: An object-oriented database system is a database
Q28: Update anomalies are problems in a relation
Q29: In a hierarchical database model, all record
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