Beginning MySQL Database Design and Optimization: From by Chad Russell, Jon Stephens PDF

By Chad Russell, Jon Stephens

ISBN-10: 1430207299

ISBN-13: 9781430207290

ISBN-10: 1590593324

ISBN-13: 9781590593325

Nearly each non-trivial software calls for info endurance, and for an program of any major measurement and scope, patience is usually accomplished utilizing a database. If you’re construction or preserving any major software and are utilizing MySQL, this booklet is for you. For open resource and different different types of initiatives, the MySQL database is a really well known selection: it’s unfastened, quickly, strong, and scalable, and it runs on the entire significant structures, permitting greatest use of accessible assets. yet it’s effortless to ignore MySQL’s velocity and different merits in case your database layout is inefficient. Needlessly duplicating information, utilizing mistaken kinds for columns, overloading a unmarried desk the place a number of tables can be used, failing to leverage the calculation positive factors of MySQL, and making a number of queries rather than a good unmarried question are the various universal mistakes.

Beginning MySQL Database layout and Optimization indicates you ways to spot, triumph over, and keep away from gross inefficiencies. It demonstrates the right way to maximize the numerous information manipulation positive factors that MySQL contains. This ebook explains the way to comprise assessments and branches on your queries, the best way to normalize your database, and the way to factor concurrent queries to spice up functionality, between many different layout and optimization themes. You’ll additionally know about a few beneficial properties new to MySQL 4.1 and 5.0 like subqueries, kept systems, and perspectives, all of in an effort to assist you construct much more effective applications.

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Extra info for Beginning MySQL Database Design and Optimization: From Novice to Professional

Example text

Strictly speaking, a column type refers to the datatype that the column is intended to contain; in other words, a column is declared to be ofa particular datatype. As you'll see shortly, data comes in four basic varieties insofar as MySQL is concerned: numbers, strings (character data), dates and times, and groupings (sets). Each ofMySQI:s datatypes belongs to one of these. Each datatype has a particular purpose or provides a best fit when modeling one or more objects or situations in the real world.

MySQL is somewhat unusual among relational databases in that it supports a number of database engines and corresponding table types, including ISAM, MyiSAM, InnoDB, and Berkeley DB, among others. No useful book on building and using MySQL databases would be complete without a discussion of MySQL table types and their characteristics. In Chapter 2, we'll examine each of these table types in terms of their capabilities, availability, requirements and relative strengths and weaknesses. 0. 44 CHAPTER 2 MySQL Column and Table Types To BEGIN WITH the obvious, the purpose of a database is to provide a place where you can store data now and retrieve it reliably at some time in the future.

Note that, because we override the GROUP BY order, we need to specify that we want the results to be sorted by last name and first name within groups of customers with the same total number of orders. The result might look something like this: 27 Chapter 1 In the example shown here, you might notice that the numbers in the average column have more than two digits to the right of the decimal point. This is a side effect often encountered when performing floating-point arithmetic; see the next chapter for a discussion of this.

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Beginning MySQL Database Design and Optimization: From Novice to Professional by Chad Russell, Jon Stephens

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