“This study does highlight the fact that a chosen option does not necessarily dictate or limit the scale as long as the other attributes such as an effective parallelism algorithm, B-tree indices, main-memory computation, compression etc. can help achieve the desired scale.”
“MapReduce in Practice • Abstract input and output interfaces - lots of MR operations don't just read/write simple files • B-tree files • memory-mapped key-value stores • complex inverted index file formats • BigTable tables • SQL databases, etc.”
“I have tried running Disk Utility from the installation CD several times, and using fsck in single-user mode to try to rebuild the Catalog B-tree, all to no avail.”
“I'll explain how Fractal Trees work, and show why they can get one to two orders of magnitude speedup on insertions compared to B-tree indexes.”
“Since the difference I've identified between B-tree indexes and Fractal tree indexes is the disk seeks on insertions, it may seem that there's little to look at in this case.”
“It attempts to index according to the best use for a given database, instead of defaulting to B-tree sorting.”
“A nonclustered index is a smaller ancillary index (also a B-tree) that is used to store the clustered index key and any other columns that are needed to provide quick retrieval.”
“In SQL Server, a clustered index is a B-tree (a storage algorithm for optimal retrieval) of the keys that are used in the clustered index definition, with the data stored at the bottom or leaf level of the B-tree.”
“If you know the order of a B-tree, how do you figure out the maximum number of descendants from a page?”
“Unfortunately XtraDB is not yet so popular as InnoDB, and actually in this case I do not expect big difference, as B-tree on disk is B-tree on disk.”
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