Data sheet is MyISAM format, what does it mean? Data sheet is MyISAM format, what does it mean? -Database-related-php teaching _php tutorials

Source: Internet
Author: User
MyISAM table. MyISAM storage format is the default type in MySQL since version 3.23, and it has the following features:
If the operating system itself allows larger files, then the file is larger than the ISAM storage method.
The data is stored in a machine-independent format with low byte precedence. This means that tables can be copied from one machine to another, even if they are different architectures.
Numeric index values account for less storage space because they are stored in high-byte precedence. Index values change quickly in low-level bytes, so high-bit bytes are easier to compare.
Auto_increment processing is better than the ISAM table. The detailed content is discussed in the 2nd Chapter.
Several index limits are reduced. For example, columns with NULL values can be indexed, and columns of BLOB and TEXT types can also be indexed.
To improve the integrity checking of a table, each table has a flag that is set after MYISAMCHK checks the table. You can use Myisamchk-fast to skip checking for tables that have not been modified since the previous check, which makes this management task faster. The table also has a flag indicating whether the table is gracefully closed. If the server shuts down or the machine crashes, this flag can be used to detect the table that needs to be checked when the server is started.

http://www.bkjia.com/PHPjc/631433.html www.bkjia.com true http://www.bkjia.com/PHPjc/631433.html techarticle MyISAM table. The MyISAM storage format is the default type in MySQL since version 3.23, and it has the following characteristics: If the operating system itself allows larger files, then the file is stored more than ISAM ...

  • Related Article

    Contact Us

    The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

    If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

    A Free Trial That Lets You Build Big!

    Start building with 50+ products and up to 12 months usage for Elastic Compute Service

    • Sales Support

      1 on 1 presale consultation

    • After-Sales Support

      24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.