>>We rebuild indexes daily, but we have a fair amount of CRUD.
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>What is CRUD?
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>>Don't forget about reorganizing indexes. Fragmentation greater than 10% but less than 30% (IIRC) suggests that index be reorganized rather than rebuilt. SQL Server can reorganize indexes without making them inaccessible which means no down time, though I would recommend doing reorgs during off-peak hours.
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>I never rebuilt. I delete them and recreate them from scratch.
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>>SQL Server Enterprise allows rebuilding of indexes while leaving them online for 24/7/365 uptime goals.
>
>What do you mean exactly?

CRUD - insert/update/delete operations.