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To solve this problem, snapshot objects store a vector of n components and provide the following two atomic operations: update(i,v) changes the value in the ith component to v, and scan() returns the values stored in all n components. [1] [2] Snapshot objects can be constructed using atomic single-writer multi-reader shared registers.
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 ...
[1] [2] [3] If any specific order between some transactions is requested by an application, then it is enforced independently of the underlying serializability mechanisms. These mechanisms are typically indifferent to any specific order, and generate some unpredictable partial order that is typically compatible with multiple serial orders of ...
Filesystems on such snapshot images can later be mounted as if they were on a read-only media. Some volume managers also allow creation of writable snapshots, extending the copy-on-write approach by disassociating any blocks modified within the snapshot from their "parent" blocks in the original volume. Such a scheme could be also described as ...
describe the content: notes regarding the quality of video content, rating, description (for example, during a sport event, keywords like goal, red card will be associated to some clips) classify media: metadata allows producers to sort the media or to easily and quickly find a video content (a TV news could urgently need some archive content ...
Provides incremental backups with the ability to download every snapshot. ElephantDrive Any number of versions can be kept for any amount of time. Google Drive Old versions of files are kept for 30 days or 100 revisions. Revisions can be set not to be automatically deleted. IASO Backup
Snapshot, a 2005 novel by Garry Disher; Snapshot (novella), a 2017 novella by Brandon Sanderson; SNAPSHOT or SNAP-10A, a 1965 American nuclear-powered satellite; Snap shot (ice hockey), a fast shot made by snapping the wrists; Snapshots, a 2016 Canadian reality program for children; Snapshots, a 2005 jukebox musical of Stephen Schwartz songs
A quick FAQ about existing and future snapshots of the English Wikipedia. For information on German snapshots, see m:Wikipedia on CD/DVD and more detailed pages on de:WP. For information on multilingual snapshots, see pages here and on meta about the Mandrake collaboration (links?). To be created: a global page on meta about snapshots in all ...