The external schema of a database represents all the requirements and formats of the system,while the conceptual schema deals with the requirements of a particular usage of the database.
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Q2: The broadest goal of database development is
Q3: Achieving good data quality is such an
Q4: Conceptual data modeling is especially process-oriented and
Q5: Due to the high cost costs of
Q6: In the traditional life cycle,the systems implementation
Q8: The characteristic of consistency in data quality
Q9: Although establishing a common vocabulary among different
Q10: Refinements to the conceptual data model usually
Q11: The role of a database is to
Q12: The systems analysis phase produces problem statement
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