Which of the Following Statements About 'Hierarchical Databases' Is Correct

question 82

Multiple Choice

Which of the following statements about 'hierarchical databases' is correct?

• A)Permits access to customer data by account number but may not allow for easy extraction of data
• B)Permits multiple access points to data and is more flexible in terms of extracting data
• C)Data are stored in two-dimensional tables,where each table is linked by common keys and where data is very easily manipulated
• D)A database used for market segmentation studies and target market profiling
• E)A data warehouse or archive

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