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146

answers:

1
Q: 

How to draw two different possiblity of query tree for the example? in ddbms

select topic from book b, share s, stall st where b.b#=s.b# and st.store#=s.store#

Hi friends, i am trying to draw query tree i dont know how to draw query tree for above example. can you help me in that. thanks in advance

A: 

If this is for a distributed database, you need to first know how your database is distributed before you can draw a query tree for it ie. vertical (columns) and horizontal (values) distribution

samwa  2010-04-05 12:05:24

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