Answer: B) conducting requirements structuring.
Explanation:
The Key physical database design decisions usually include: deciding on the storage format as well as physical storage that makes access to database more efficient, design practices which aid quick retrieval, and attributes grouping into physical records. So the following are key design decisions but conducting requirements structuring is not.
A) choosing the storage format for each attribute from the logical database model.
C) arranging related records in secondary memory so that individual and groups of records can be stored, retrieved, and updated rapidly.
D) selecting media and structures for storing data to make access more efficient.
E) grouping attributes from the logical database model into physical records
