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For systems without a commit/rollback mechanism available, one can undo a failed transaction with a compensating transaction, which will bring the system back to its initial state. Typically, this is only a workaround which has to be implemented manually and cannot guarantee that the system always ends in a consistent state.
SQL refers to Structured Query Language, a kind of language used to access, update and manipulate database. In SQL, ROLLBACK is a command that causes all data changes since the last START TRANSACTION or BEGIN to be discarded by the relational database management systems (RDBMS), so that the state of the data is "rolled back" to the way it was before those changes were made.
The crash took place around 3 a.m. in Piedmont, a small affluent area community enclaved by Oakland in Alameda County and the cause of the crash remained under investigation by law enforcement Monday.
April 28 – United States – On Highway 138 in Littlerock, California a sedan collided with a hatchback killing five. [524] April 28 – Peru – A bus fell into a river in Cajamarca Department, killing 25 people and injuring 13. [525] April 28 – Mexico – A bus overturned in Malinalco, Mexico State, killing 18 people and injuring 32. [526]
A motorist killed Monday when her car left the roadway and struck a palm tree west of Fresno was identified Tuesday by the Fresno County Coroner as Maria Garcia, 27, of Kerman.. California Highway ...
The crash occurred when an Orange County Fire Authority truck swerved to miss a ladder in the road, causing it to flip, reports say. 8 California firefighters injured in freeway rollover after ...
The rollback feature undoes all the consecutive edits made by an editor to a single page. This is handy if, for example, a user makes eight edits to an article and you want to revert all eight edits. When you click "rollback", all eight edits are undone. Use of rollback is subject to the rollback guideline, which explains when rollback can be ...
A side impact can accelerate a vehicle sideways. The tires resist the change, and the coupled forces rotate the vehicle. In 1983, crash tests showed that light trucks were prone to rolling over after colliding with certain early designs of guide rail. [4] A rollover can also occur as a vehicle crosses a ditch or slope.