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A 'non-clustered index' does not store data physically separate from the rows of the table
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In database systems, data redundancy does not increase storage requirements but can improve read performance
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The data is divided into smaller blocks, temporarily sorted in internal memory, and then combined.
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Fragmentation is used in distributed databases to enhance performance and data organization
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Asynchrony and Pipelining are implementation techniques for overlapping processing and I/O operations.
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An 'outer join' in SQL will return only the matching rows in both tables
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The Atomicity of a transaction refers to the fact that a transaction is indivisible, meaning it runs entirely or not at all.
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A transaction can execute even if the transactions from which it has read have NOT finished.
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In the context of the First Normal Form (NF), there is functional dependency between the columns in the table that should be managed separately.
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Unrepeatable reads are considered a problem because they allow a transaction to get the same data values in multiple reads within the same transaction.
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