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A database engine (or storage engine) is the underlying software component that a database management system (DBMS) uses to create, read, update and delete (CRUD) data from a database.
A number of available libraries implement connection pooling and related SQL query pooling, simplifying the implementation of connection pools in database-intensive applications. Administrators can configure connection pools with restrictions on the numbers of minimum connections, maximum connections and idle connections to optimize the ...
MariaDB is a community-developed, commercially supported fork of the MySQL relational database management system (RDBMS), intended to remain free and open-source software under the GNU General Public License.
For example, you can pipe the output of gzip into a named pipe like so (here out.gz is from above example but it can be any gz): mkfifo -m 0666 /tmp/namedPipe gzip -d < out.gz > /tmp/namedPipe Then load the uncompressed data into a MySQL table [ 3 ] like so:
Star schema used by example query. Consider a database of sales, perhaps from a store chain, classified by date, store and product. The image of the schema to the right is a star schema version of the sample schema provided in the snowflake schema article.
A common table expression, or CTE, (in SQL) is a temporary named result set, derived from a simple query and defined within the execution scope of a SELECT, INSERT, UPDATE, or DELETE statement.
In computer networking, localhost is a hostname that refers to the current computer used to access it. The name localhost is reserved for loopback purposes. [1] It is used to access the network services that are running on the host via the loopback network interface.
MySQL, for example, supports the use of INSERT... ON DUPLICATE KEY UPDATE syntax [5] which can be used to achieve a similar effect with the limitation that the join between target and source has to be made only on PRIMARY KEY or UNIQUE constraints, which is not required in the ANSI/ISO standard.