A manager and a programmer usually have the same view of the same data.
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Q1: The hierarchical model is software-independent.
Q4: Today, most relational database products can be
Q10: In an SQL-based relational database,each table is
Q10: Each row in the relational table is
Q12: A data model is usually graphical.
Q13: The relational model is hardware-dependent and software-independent.
Q14: Database designers determine the data and information
Q17: The network model has structural level dependence.
Q19: In an SQL-based relational database, rows in
Q20: An implementation-ready data model should contain a
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