What does a database dump do?

Question

A database dump (also: SQL 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. 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.

What is the meaning of dumping a database?

A data dump is the transfer of a large amount of data between two systems, often over a network connection. For example, a database can be dumped to another network server, where it could be utilized by other software applications or analyzed by a person.

What is difference between dump and backup?

A database dump using expdp is a 1-time export of one or more database schemas. It backs up DDL (table structures, views, synonyms, stored procedures, packages, etc), plus data. An RMAN backup is a point-in-time backup of an entire database (for the purposes of this question).

What does MySQL dump do?

Mysqldump is a command-line utility that is used to generate the logical backup of the MySQL database. It produces the SQL Statements that can be used to recreate the database objects and data. The command can also be used to generate the output in the XML, delimited text, or CSV format.

How long does a database dump take?

Although a mysqldump may take 30 minutes to complete, your restore of that data might take 8 hours or more. That's due in part to rebuilding all those indexes.

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