New PDF release: MCTS 70-431: Implementing and Maintaining Microsoft SQL

By Thomas Moore

ISBN-10: 0789735881

ISBN-13: 9780789735881

The MCTS 70-431 examination Cram is a must have source on your MCTS 70-431 examination instruction. The examination Cram specializes in precisely what you must understand to get qualified. This comprises good points like:Complete insurance of all 70-431 examination objectivesExam indicators, perform questions, notes, information, sidebars, cautions, test-taking suggestions, and time-saving tipsAccess to MeasureUp perform questions and cutting edge checking out softwareThe well known Cram Sheet tear card, providing you with the most important proof you want to overview earlier than you input the trying out centerInsight from writer Thomas Moore, a Microsoft qualified coach (MCT) and SQL Server specialist who has helped 1000s of scholars earn their SQL Server certifications

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Normally, you relate the referencing or foreign key of one table to the primary key or other unique value of a second table. The PRIMARY KEY Constraint A PRIMARY KEY constraint enforces entity integrity in that it does not permit any two rows in a table to have the same key value. This enables each row to be uniquely defined in its own right. Although a primary key should be created when a table is initially created, you can add or change a primary key at any time after table creation. You could add a primary key upon table creation as shown here: CREATE TABLE Suppliers ( supid id NOT NULL CONSTRAINT [UPKCL_supind] PRIMARY KEY CLUSTERED, lname varchar (40) NOT NULL , fname varchar (20) NOT NULL , phone char (12) NOT NULL , address varchar (40) NULL , city varchar (20) NULL , state char (2) NULL , zip char (5) NULL , active bit NOT NULL ) ON [PRIMARY] A primary key cannot have any duplicate values.

It is rare for a production server to maintain the same configuration over prolonged use. You should be prepared to adjust the configuration as needed. Postinstallation Procedures If you have used previous versions of SQL Server, one of the first things you will notice is that the SQL Server Enterprise Manager has been renamed and revamped so that it has a lot of new functionality. The new SQL Server Management Studio is a powerful tool that allows for much more than administration and data query capabilities.

Tip Keeping the log files separate from the data can help improve performance and reduce disk contention. When you're considering where to put the files for the database server, you need to think about the operating system files, the application program files, and the database filesboth data files and log files. It is also worth considering separating indexes because you can realize some performance gains if the indexes are stored on a drive other than the one on which the data is stored. You do this through the use of filegroups.

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MCTS 70-431: Implementing and Maintaining Microsoft SQL Server 2005 by Thomas Moore


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