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All data can therefore be accessed and read without a Database Management System (DBMS), or CHRONOS itself, as it is in plain text format. This eliminates the need for maintaining a DBMS solely for reading preserved static databases as well as the need to, potentially riskily, migrate database files to newer database formats. [ 9 ]
A database dump contains a record of the table structure and/or the data from a database and is usually in the form of a list of SQL statements ("SQL dump"). A database dump is most often used for backing up a database so that its contents can be restored in the event of data loss. Corrupted databases can often be recovered by analysis of the dump.
Database Applications like FoxPro and SQL Server use .bak files to back up their databases and other applications, like XML shell, create .bak files in their autosave process. [1] They do not get automatically deleted, so they need to be manually deleted after the process using it is stopped.
Data synchronization is needed to update and keep multiple copies of a set of data coherent with one another or to maintain data integrity, Figure 3. [1] For example, database replication is used to keep multiple copies of data synchronized with database servers that store data in different locations.
A backup strategy requires an information repository, "a secondary storage space for data" [7] that aggregates backups of data "sources". The repository could be as simple as a list of all backup media (DVDs, etc.) and the dates produced, or could include a computerized index, catalog, or relational database.
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SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...