Challenges in design implementation
It was difficult to come up with the most effective way to design the database. Initially, the entities consisted of a large list of entities that was gradually reduced and refined to the number of the entities that are represented in the schema .This was largely due to the fact that it is difficult deciding whether to represent a concept as an entity , relationship or attribute.
There are numerous design possibilities of the clinical database. This made it hard to determine whether any particular design decision was right or wrong .Given that ,the resulting is an interpretation of the organization’s data needs. In addition, the role of the concepts within the organization was considered.
The design chosen is mainly focused on data that is gathered within the hospital as noted by the emphasis in creating entities such as diagnosis ,laboratory ,medication and tests .This is due to the fact that the organization is focused on data that is produced within the clinic that can then be used by all the entities in the organization that include researchers, Nurses and clinicians. In essence ,priority was given to the collection of data that is produced throughout the treatment process of a patient as this data is of core value to majority of the entities in the clinic
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