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System Analysis and Design - Section 4 :: Discussion
| 17. | Which of the following statements is not true | |
| A. | Entity Relationship Diagrams are used to design files | |
| B. | Systems Overview can be prescribed by Data Flow Diagrams | |
| C. | Phases, in a Systems life cycle, are fixed and invariant. | |
| D. | Indexed files are faster than sequential files in all situations | |
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