1 votes 1 votes Aggregation is : an abstraction through which relationships are treated as lower level entities an abstraction through which relationships are treated as higher level entities an abstraction through which relationships are not treated at all as entities none of the above Databases ugcnetcse-dec2008-paper2 databases aggregation + – rishu_darkshadow asked Sep 26, 2017 edited Jun 19, 2020 by soujanyareddy13 rishu_darkshadow 2.3k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 0 votes 0 votes Ans: B ref: http://www.cs.sfu.ca/CourseCentral/354/zaiane/material/notes/Chapter2/node15.html rishu_darkshadow answered Sep 26, 2017 rishu_darkshadow comment Share Follow See all 0 reply Please log in or register to add a comment.
1 votes 1 votes Aggregration is a process when relation between two entity is treated as a single entity. Here the relation between Center and Course, is acting as an Entity in relation with Visitor. Option B Rishi yadav answered Oct 9, 2017 Rishi yadav comment Share Follow See all 0 reply Please log in or register to add a comment.