boardex database cost

How long does it cost to determine the database return? How long does it cost to write a disk?

Tags: mysql optimized databaseThird, index 4. The cost of the indexThe previous sections describe the power of indexes to improve performance and how to use indexes, but indexes are also expensive 1) Consume disk space As mentioned earlier, indexes are cost-represented after an index is added. ibd Files (InnoDB engines) or. myi files (MyISAM engines) can become larger. 2) causes DML operations to become s

Third, index4. The cost of the indexThe previous sections describe the power of indexes to improve performance and how to use indexes, but indexes are also expensive1) Consume disk spaceAs mentioned earlier, indexes are cost-represented after an index is added. ibd Files (InnoDB engines) or. myi files (MyISAM engines) can become larger.2) causes DML operations to become slowerWhen you add an index, it is fa

A program engineer will occasionally encounter when deploying code, there is no database such as MySQL on the server, or the price of the database has to be calculated in addition to the space, when your project is small or not able to buy the database space, you can consider using SQLite.SQLite is a small, but SQL statement and functionality is inferior to other

php.ini.4, the database management can download a sqlitemanagerforphp, which is based on the PHP Web management tool, similar to the MySQL phpMyAdmin. Unzip directly to XAMPPX's Htdocs folder. If you do not like the Web version, you can also use the SQLite visual management Tools SQLite Expert (as if the domestic direct URL cannot be opened, want to open it other) official website: http://www.sqliteexpert.com/ The above describes the PHP 5X using

Php 5X uses the built-in sqlite3 link database, PDO link sqlite (low-cost development) (1), sqlite3pdo A program engineer occasionally encounters code deployment. There are no databases such as mysql on the server, or the database price must be calculated outside the space, you can consider using sqlite when your project is small or you cannot afford to buy a