Question: in distributed database design , the following concepts needs a clearly understanding . . . . fragmentation reflects two types Horizontal and vertical.. what is

in distributed database design

,

the following concepts needs a clearly understanding

. . . .

fragmentation reflects two types Horizontal and vertical.. what is the clearly meaning of those concepts? when to use horizontal and when to use vertical? what is the practical application of those concepts in distributed database design?

. . .

another confusing concept is data skewing what is it with clear examples?

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