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boostr.in questions - Question:Which statement is valid regarding index clusters?


a.        Index clusters can only be used for tables with low cardinality columns
b.        Index clusters are generally well suited for tables that have many full table scans
c.        Normal B-Tree indexes do not store null key values, whereas cluster indexes store null keys
d.        A cluster index always takes up much more storage space than a normal index for the same set of key values

asked Sep 13, 2013 in MYSQL by anonymous
edited Sep 12, 2013
0 votes
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