QUESTION 1 a) Computer based file systems had significantly bring improvement over the traditional manual system processes. However, there are still many problems with file systems. Describe THREE (3) system limitations of the file systems? [3 marks] * Your answer b) Illustrate the following business rule using Chen Notation. Provide the answers with clear cardinality and relationship. Submit using image format (JPG/BMP/ PNG). Business rules: (i) Companies can buy many cars and each car belong to only a company. (ii) Every citizen must has only one identity card number. (iii) Investors can invest on multiple stocks and one stock can be bought by many investors. [3 marks] * Add File c) Differentiate between entity integrity and referential integrity in terms of requirements and purposes. [4 marks] * Your