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Ebay Interview Question for Member Technical Staffs


Country: United States
Interview Type: In-Person
More Questions from This Interview



Comment hidden because of low score. Click to expand.
2
of 2 vote

Denormalization avoids JOINs between tables, improving performance. The downside is the increase in space utilization.

- george.maggessy April 06, 2013 | Flag Reply
Comment hidden because of low score. Click to expand.
1
of 3 vote

Haha Please Change "Demormalisation" to DeNormalization... Coz nothing is gonna hamper morals..

Anyways..

Basically we need to normalise Stuffs ( I hope in this context DB ) to make sure there is not redundancy ... the performance enhancement occurs in two ways

1> No redundant data means Space utilisation minimal.
2> It helps to search the record easily coz we know the interconnection of the tables easily.. So optimization of execution time..

- hprem991 January 28, 2013 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 votes

Question corrected ..
Anyways i think there will be NO/LESS interconnection of table after denormalisation which reduces execution time .

- vasa.v03 January 28, 2013 | Flag
Comment hidden because of low score. Click to expand.
1
of 1 vote

Denormalization avoids JOINs between tables, improving performance. The downside is the increase in space utilization.

- george.maggessy April 06, 2013 | Flag


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