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Download Expert MySQL by Charles Bell PDF

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By Charles Bell

Specialist MySQL is the major reference for studying, knowing, and lengthening the MySQL server. It unlocks the complete promise of open resource through displaying how you can alter the code, create your personal garage engine, construct your individual authentication plugins, or even upload your individual services and instructions to the SQL language. No different e-book offers the extent of aspect or the wide examples of the internal workings of MySQL that experience taken engineers years to grasp. specialist MySQL is a must-have e-book for all structures integrators, engineers, and software program builders operating with the MySQL server code.
Expert MySQL can be a wealth of data on key facets of MySQL internals. You’ll find out about inner question illustration, how the optimizer creates execution plans, and the way to exert keep an eye on over these plans for optimum functionality on your surroundings. you are going to even learn how to construct your personal question optimizer, giving perception that may assist you comprehend and unravel tricky functionality difficulties. High-availability and replication also are lined, making specialist MySQL vital booklet for somebody doing high-end paintings related to MySQL.

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An example of a database system that uses a cost-based optimizer is Microsoft’s SQL Server. The query optimizer in SQL Server is designed around a classic cost-based optimizer that translates the query statement into a procedure that can execute efficiently and return the desired results. The optimizer uses information, or statistics,11 collected from values recorded in past queries and the characteristics of the data in the database to create alternative procedures that represent the same query.

Figure 2-4 depicts the MySQL architecture and its subsystems. At the top of the drawing are the database connectors that provide access to client applications. As you can see, a connector for just about any programming environment you could want exists. To the left of the drawing, the ancillary tools are listed grouped by administration and enterprise services. For a complete discussion of the administration and enterprise service tools, see Michael Kruckenberg and Jay Pipes’s Pro MySQL,12 an excellent reference for all things administrative for MySQL.

The query is parsed, transformed into an internal structure, optimized, and executed, and the results are returned to the client. Now that I’ve given you a glimpse of all the steps involved in processing a query, and you’ve seen the complexity of the database system subcomponents, it is time to take a look at a real-world example. In the following section, I present an in-depth look at the MySQL database-system architecture. The MySQL Database System The MySQL source code is a highly organized and built using many structured classes (some are complex data structures and some are objects, but most are structures).

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