1)True O 2) False Save Question 47 (2 points) Physical database design is necessary 1) to eliminate the data redundancy left over from logical database design 2) to make the first pass at arranging the attributes into related groupings 3) to improve the performance of the run-time environment. 4) to place foreign keys where they need to be to model the relationships in the business environmen 5) to prepare for logical database design O O O Save Question 48 (2 points)