(d) Explain how does the Data Base Management System (DBMS) approach overcome the problems of unproductive maintenance while ensuring a maximum sharing of stored data? (4 marks)

» a) Explain the difference between productive and unproductive maintenance and how it relates to the concept of data independence.(4 marks)
» (b) Can the use of multiple copies of data files eliminate the need to perform unproductive maintenance? Why? (4 marks)
» (e) Explain how the terms "data" and "information" are used in M359? And how they relate to each other? Give examples of each. (4 marks)
» Explain what problems could you face if each of the data quality issues in section 2.3 of Block 1 is not met? Give examples
» (c) What other problems occur in the file processing approach? (4 marks)