How does MySQL store data physically?

Question

Basically mySQL stores data in files in your hard disk. It stores the files in a specific directory that has the system variable "datadir". 30 апр. 2012 г.

How is data stored in database physically?

Well, data in tables is stored in row and column format at the logical level, but physically it stores data in something called data pages. A data page is the fundamental unit of data storage in SQL Server and it is 8KB in size.

Where does MySQL store its data?

Typically, MySQL will store data in the default directory of /var/lib/mysql.

Where are databases physically stored?

Database tables and indexes may be stored on disk in one of a number of forms, including ordered/unordered flat files, ISAM, heap files, hash buckets, or B+ trees. Each form has its own particular advantages and disadvantages. The most commonly used forms are B-trees and ISAM.

How does MySQL work internally?

MySQL parses queries to create an internal structure (the parse tree), and then applies a variety of optimizations. These can include rewriting the query, determining the order in which it will read tables, choosing which indexes to use, and so on.

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