database backup

MariaDB Backup and Restore with mysqldump

In MariaDB both logical and physical backups are possible. Logical backups are made up of SQL statements that actually performed CREATE, SELECT, UPDATE, INSERT, etc. operations on the database and Physical backups are copying the data and index files that store the table information including structure and data. While logical backups are highly portable, physical backups are less portable and compatible between not only different hardware, OS, etc. but also between different storage engines of the same DBMS. This is due to the difference in file structure used by different intra-database storage engines and between different OS, hardware, drivers etc.

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Performing Backup of a Live MySQL Database using mysqldump

Live MySQL Backup without Locking Tables

Mysqldump client utility is the easiest and favorite tool for DBAs to backup a MySQL database. It supports numerous options to configure the backup such as type of backup format, what to backup, how to deal with key constraints, how to deal with transactions etc. The output of a mysqldump backup operation is named as a dump file and it can be restored to recreate the backed up database. The dump files can be in formats like CSV, tab-delimited, SQL, XML etc. The dump file can be further compressed using a suitable compression utility like Tar, Gzip, XZ, Bzip2 etc to reduce the dump file size to make it easier for storage and transfer.

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