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What are the Advantages of de normalized data?
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Answer / kris
De Normalised Data:
A table storing denormalised data occupies more space
because lot of duplicate information creeps in when we
denormalise a table.
As less number of join conditions are required to retrieve
data from one/more denormalised tables, the performance
will be fast.
DWH environment prefers denormalised data structures.
| Is This Answer Correct ? | 27 Yes | 2 No |
Answer / mahesh
Denormalized data makes data retrieval operation faster and
reliable due to minimum number of joins used for
it.Therefore it improves the performance of the system.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / eric yang
De-normalized data can save more space and have better
performance when run a sql for it
| Is This Answer Correct ? | 0 Yes | 21 No |
My source is like bellow F.NAME M.NAME L.NAME A B C D E F G H I and out put should like S.NO F.NAME M.NAME L.NAME 1 A B C 2 D E F 3 G H I 4 UNNOWN UNNOWN UNNOWN How can we acheive? please explane me indetail
suppose my source is 101 a 1o1 b 101 c 101 d i want target like that 101 abcd how will u achive this please give me the answer
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