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Version function - PowerPoint PPT Presentation

Chapter 7

Chapter 7

Chapter 7. Synchronization: Multiversion Concurrency Control. Multiversion serializability. s = r 1 (x) w 1 (x) r 2 (x) w 2 (y) r 1 (y) c 2 w 1 (z) c 1. ? CSR. s = r 1 (x) w 1 (x) r 1 (y) w 1 (z) c 1 r 2 (x) w 2 (y) c 2. ? CSR (following 2PL). Motivation (1). Example 7.1:.

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899 views • 55 slides
Chapter 7

Chapter 7

Chapter 7. Synchronization: Multiversion Concurrency Control. Multiversion serializability. s = r 1 (x) w 1 (x) r 2 (x) w 2 (y) r 1 (y) c 2 w 1 (z) c 1. ? CSR. s = r 1 (x) w 1 (x) r 1 (y) w 1 (z) c 1 r 2 (x) w 2 (y) c 2. ? CSR (following 2PL). Motivation (1). Example 7.1:.

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695 views • 55 slides
Chapter 7

Chapter 7

Chapter 7. Synchronization: Multiversion Concurrency Control. Multiversion serializability. s = r 1 (x) w 1 (x) r 2 (x) w 2 (y) r 1 (y) c 2 w 1 (z) c 1. s = r 1 (x) w 1 (x) r 2 (x) r 1 (y) w 2 (y) c 2 w 1 (z) c 1. ? CSR. ? CSR.

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556 views • 55 slides
Server-side Functions for Geo-spatial Selection

Server-side Functions for Geo-spatial Selection

Server-side Functions for Geo-spatial Selection. James Gallagher 22 Feb 2007. Why build server-side functions?. Some operations are much more efficient to do before sending the data. Some operations are possible only after performing several data accesses.

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260 views • 19 slides
Server-side Functions for Geo-spatial Selection

Server-side Functions for Geo-spatial Selection

Server-side Functions for Geo-spatial Selection. James Gallagher 22 Feb 2007. Why build server-side functions?. Some operations are much more efficient to do before sending the data. Some operations are possible only after performing several data accesses.

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199 views • 19 slides

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