Concurrency control | Transaction processing
In databases, and transaction processing (transaction management), snapshot isolation is a guarantee that all reads made in a transaction will see a consistent snapshot of the database (in practice it reads the last committed values that existed at the time it started), and the transaction itself will successfully commit only if no updates it has made conflict with any concurrent updates made since that snapshot. Snapshot isolation has been adopted by several major database management systems, such as InterBase, Firebird, Oracle, MySQL, PostgreSQL, SQL Anywhere, MongoDB and Microsoft SQL Server (2005 and later). The main reason for its adoption is that it allows better performance than serializability, yet still avoids most of the concurrency anomalies that serializability avoids (but not all). In practice snapshot isolation is implemented within multiversion concurrency control (MVCC), where generational values of each data item (versions) are maintained: MVCC is a common way to increase concurrency and performance by generating a new version of a database object each time the object is written, and allowing transactions' read operations of several last relevant versions (of each object). Snapshot isolation has been used to criticize the ANSI SQL-92 standard's definition of isolation levels, as it exhibits none of the "anomalies" that the SQL standard prohibited, yet is not serializable (the anomaly-free isolation level defined by ANSI). In spite of its distinction from serializability, snapshot isolation is sometimes referred to as serializable by Oracle. (Wikipedia).
Sometimes a closeup works best, but other times you may want a wider-angle shot. You can experiment by moving closer and farther away from your subject, or by using your camera's zoom. We hope you enjoy! To learn more, check out our written lesson here: https://edu.gcfglobal.org/en/digita
From playlist Digital Photography
In this Surgery Snapshot I discuss the presence of hemophilia A and B in the surgical patient.
From playlist Surgery Snapshots for Medical Students
Here is a demonstration of the doppler effect.
From playlist All Demonstrations
Stereolab "Ticker Tape Of The Unconscious" (Montage)
Taken from the album "Dots And Loops".
From playlist the absolute best of stereolab
Short for "digital single-lens reflex," DSLR Cameras are large cameras with interchangeable lenses that can take very high-quality photos. We hope you enjoy! To learn more, check out our written lesson here: https://edu.gcfglobal.org/en/digitalphotography/
From playlist Digital Photography
Lecture 13: Spanner MIT 6.824: Distributed Systems (Spring 2020) https://pdos.csail.mit.edu/6.824/
From playlist MIT 6.824 Distributed Systems (Spring 2020)
How to use a Split Focus Diopter | Shanks FX | PBS Digital Studios
A split focus diopter is an unique way to achieve the illusion of deep focus. The half convex glass attaches in front of the camera's lens to make half the lens nearsighted. Before the digital age of cinema, many directors made frequent use of the split-focus diopter. The split diopte
From playlist Cinematography
How To Setup A Sandbox Environment For Malware Analysis
Hey guys! in this video I will be showing you how to setup a sandbox environment for malware analysis with VirtualBox and Fakenet. Fakenet: https://sourceforge.net/projects/fakenet/ Get Our Courses: Python For Ethical Hacking: https://www.udemy.com/python-for-ethical-hacking-develop-pent
From playlist Malware Analysis
Linux Sysadmin Basics -- LXC 1: Overview
Overview of LXC, a set of tools that you can use for linux operating-system virtualization. This video gives an overview of LXC's features compared to FreeBSD jails, Solaris Zones, and other OS-Virtualization tools. Overview of different OS-virtualization technologies: https://en.wikiped
From playlist LXC -- Linux Containers
Relational Databases (part 5 of 6)
The essential concepts of relational databases. Part of a larger series teaching programming. Visit codeschool.org
From playlist Relational Databases
Dynamic Mode Decomposition (Overview)
In this video, we introduce the dynamic mode decomposition (DMD), a recent technique to extract spatio-temporal coherent structures directly from high-dimensional data. DMD has been widely applied to systems in fluid dynamics, disease modeling, finance, neuroscience, plasma physics, robot
From playlist Data-Driven Dynamical Systems with Machine Learning
Live from the ATLAS Experiment
Find out more about the ATLAS Experiment and recent upgrades of the detector.
From playlist 360° videos
Connecting MATLAB to Raspberry Pi to prototype an image processing algorithm
For more information please visit - http://www.element14.com/community/groups/mathworks-simulink Raspberry Pi Inventor Eben Upton shows how the Raspberry Pi can be used with MATLAB for simple image processing and robot motor control application
From playlist Raspberry Pi Tutorials
6th Annual Google Test Automation Conference 2011 (GTAC 2011) "Cloudy With A Chance Of Tests" Computer History Museum Mountain View, CA USA October 26-27, 2011 Presented by Simon Stewart. ABSTRACT Google has a unique infrastructure for running web tests. This talk will focus o
From playlist GTAC 2011
CAS1444 An Early Adopters Story about SUSE Cloud Application Platform
This case study session was delivered at SUSECON in April 2019, in Nashville, TN. Abstract: An early adopters story about SUSE Cloud Application Platform The purpose of this talk is to give you an insight about our Cloud Foundry deployment using SUSE Cloud Application Platform for the Swis
From playlist SUSECON 2019
Docker Tutorial For Beginners | Docker Training | DevOps Tools | Edureka
***** DevOps Training : https://www.edureka.co/devops-certification-training ***** This DevOps tutorial ( Docker Tutorial Blog Series: https://goo.gl/6suzce ) explains how Docker fits into the DevOps Ecosystem. This DevOps introduction video is specially designed for beginners to learn. T
From playlist DevOps Training Videos
GTAC 2014: Scalable Continuous Integration - Using Open Source
Vishal Arora (Dropbox) Many open source tools are available for continuous integration (CI). Only a few operate well at large scale. And almost none are built to scale in a distributed environment. Come find out the challenges of implementing CI at scale, and one way to put together open
From playlist GTAC 2014
In light of the recent lock down in Brisbane, I think I'll just do this at home for exercise :)
From playlist General Fitness