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Parchive (a portmanteau of parity archive, and formally known as Parity Volume Set Specification [1] [2]) is an erasure code system that produces par files for checksum verification of data integrity, with the capability to perform data recovery operations that can repair or regenerate corrupted or missing data.
It supports MySQL, Oracle, SQL Server, PostgreSQL, IBM Db2, Firebird, Interbase, HSQLDB, H2, Apache Derby, Informix, Greenplum, SQLite, Sybase ASE, and Sybase ASA. Licensed under both open source and commercial licenses. Daffodil Replicator is a Java tool for data synchronization, data migration, and data backup between various database servers.
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.
Data migration is a project through which data will be moved or copied from one environment to another, and removed or decommissioned in the source. During the migration (which can take place over months or even years), data can flow in multiple directions, and there may be multiple simultaneous migrations.
The most common data recovery scenarios involve an operating system failure, malfunction of a storage device, logical failure of storage devices, accidental damage or deletion, etc. (typically, on a single-drive, single-partition, single-OS system), in which case the ultimate goal is simply to copy all important files from the damaged media to another new drive.
“Dancing With the Stars” boogied to tremendous ratings growth throughout its Season 33, and that remained true for its season finale. The multiplatform numbers are out for the Nov. 26 finale ...
Postgres Vision is multi-day event that focuses on current and future enterprise usage of Postgres and open source data management. The event draws database administrators, architects, data scientists, line of business executives, C-level executives, and developers to network, share best practices, and explore new and emerging use cases for ...
Some of us wait until December to fill those stockings, but November is a great time to load up on the year's best stocking stuffers.Hats, gloves, socks, underpants — we are tracking all the ...