Goldman Sachs Interview Question for Applications Developers


Country: India




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1
of 1 vote

Is it a database (Orale) question?

It reverses the bits, and thus used to remove hot spots (frequently/massively) accessed portion of index.

dba-oracle.com/t_reverse_key_indexes_dml_insert.htm

asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:627823669999

Regards,
Manu

- Manu Batham September 18, 2013 | Flag Reply
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0
of 0 vote

In some cases when we have sequence and the entries are like 106781,106782...
In these cases the entries are made in same block and this may create hotspot . So In reverse key indexing the bytes are reversed so 187601, 287601. so these entries go in different blocks . So it reduces the hotspot.

Complexity of B- tree is O(log n) for search ,insert , delete.

- Anonymous September 19, 2013 | Flag Reply
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-1
of 1 vote

GoldMan Sach And JPMC Interviewers are like "Frogs in a well", They don't have deeper knowledge of any thing. They will pretend as if the next father Java/Oracle/Web Service are in-front of you. They will ask you to write Stupid questions : Java custom class loader, Java HashMap, Jdk 6 features, JDBC 4.0 API, class/forName(), Equal HashCode, SQL joins, triggers. concurrent hashmap. Stupid FAQs are enough for these so called experts.

- Ashis Kumar October 09, 2013 | Flag Reply
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3
of 3 votes

I do not get it, what are you complaining here?. If they ask any type of questions, that will same for all. If they ask stupid questions, you can debate and create new thoughts. And apart from that , asking stupid questions in the interview and giving good salaries that is a pretty good deal. so STFU

- GOD February 12, 2014 | Flag
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0
of 0 votes

GOD,

Yeah. You should know all these things since you are not going to work on them. Perfect man. You rock.

- Raul October 29, 2014 | Flag


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