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Database Design Manual: using MySQL for Windows (Springer by Matthew Norman

By Matthew Norman

Crucial SQL quick offers a accomplished consultant to SQL, utilizing the Windows-based model of MySQL. MySQL is a freely to be had, multi-platform database administration approach, making it perfect for studying the suggestions and ideas of database layout. utilizing a number of labored examples and illustrations, Matthew Norman describes easy methods to manage the database administration approach MySQL. In doing so he covers a number of issues, together with: fitting and trying out MySQL; utilizing the graphical instruments; database layout innovations and ideas; retrieving, altering and deleting info; and the way to make different items speak with MySQL.

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Additional info for Database Design Manual: using MySQL for Windows (Springer Professional Computing)

Example text

Because it is such a simple definition, you only need to use one bit to store it, as a single bit can be either on or off. ) Although BOOL can be used to store these values, it actually is the same as using the TINYINT(1) datatype. If you store a number bigger than 1 in a BOOL, then that number is stored as long as it is not larger than 127. If it is bigger than 127, then 127 is stored. If you are expecting this datatype to be a pure Boolean, it is not. 1 you will see that TINYINT takes up one byte to store.

Type the following to ensure that we are connected to the correct database: USE MySQLfast You can also ensure that you are connected to the MySQLfast database by checking that the client says MySQLfast next to the word Connected on the second row of controls on the client. If it says mysql you are in the wrong database, so pull down the menu by clicking on the square next to mysql and select MySQLfast. Once you are connected to the correct database you can type the following in the query box: INSERT INTO webpage (Title) VALUES (“Home”) Click onto the Execute Query button to run the query.

Removal of row 2 from the cookie table has compromised the referential integrity of the rest of the database. The only way that we could remove row 2 of the cookie table is if we removed every row that contained a reference to it in all related tables. We have to remove all of the foreign key references to this row first, and then remove the primary key from the cookie table. There is a specific type of command used for deleting data while maintaining referential integrity called a CASCADE delete.

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