Emma Kolb is a system analyst at a manufacturing company located in Perth, W.A. She has been asked to analyse the company's accounting information system and to recommend cost-effective improvements. After noting that the same production files have been saved and stored independently on several databases, she recommends that they be stored only once. Implementation of her recommendation would benefit the company by contributing to 1) data independence. 2) data integration. 3) reduce data redundancy. 4) increase data sharing.