Exercises, examples and other material relating to training module S050. This module is presented on Private Courses and Specially Run Courses only

MySQL is a relational database system - a system that's used for updating and extracting data from a series of linked tables so that the data can be stored uniquely, efficiently, and without conflict when several users require concurrent access.Management overview of MySQL - background and Philosophies
Left Joins to link three or more tables
MySQL Extras

Articles and tips on this subject		updated
3361	Blowing our own trumpet - MySQL resources From my mailbox .... Hello,   I was able to (finally) learn the many to many relationships from your tutorial! It is written very well, thank you for it :)   Are there any resources or practical tutorial packs that you sell like an ebook or something?   For example things that intermediate ...	2011-07-19
2861	MySQL and Java - connectivity past, present, and future thoughts MySQL has migrated from MySQL AB (1995 to 2008) to Sun (2008 to 2010) to Oracle (from 27 Jan 2010) wizard:java graham$ /usr/local/mysql/bin/mysql -uwellho -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.1.48 MySQL Community ...	2010-07-09
2567	Extra MySQL course dates (2 day course, UK) We've added a MySQL course into our calendar - on Saturday and Sunday 20th and 21st February, at Well House Manor. The course includes a general introduction to SQL, with a slant towards the MySQL flavor, and the principles of database design too ... as well as the installation and configuration of MySQL. This ...	2010-01-09
2561	The future of MySQL MySQL has grown from a very neat little open source database 10 years ago into a very powerful and widespread database that's not always fully open source any longer today. The MySQL company was bought out by Sun a couple of years back (January 2008), and in turn Oracle are now buying Sun. This deal ...	2010-01-03
2559	Moving the product forward - ours, and MySQL, Perl, PHP and Python too I have just posted a "steady as she goes" message, welcoming the new decade but reassuring our customers that we're carrying on offering very much the same high quality courses, and the same high quality hotel rooms. But things can't stand totally still - they would stagnate, courses would get out ...	2010-01-01
2426	Which version of MySQL am I running? Oh be careful - that is a VERY dangerous question. Do you mean "what version is my MySQL server" or "what version of the mysql client program am I running?" I'll show you how to find answers to both questions. What version is my MySQL server? Use the select command, and run the version function within ...	2009-09-26
2240	How do I query a database (MySQL)? From my mailbox ... "What are the different ways of queries in databases? Could u pls explain each way in more detail? thanks" The term "query" means something a little bit different in the term "SQL" to it does in regular English usage - the dictionary definition is to ask for information / pose a ...	2009-06-22
2085	MySQL - licensing issues, even with using the name MySQL is a really good database and it's been available for a very long time under an open source license - indeed this piece of text will be stored in a MySQL database when I've added it to our web site using the Movable Type software , and pulled back from there using both Movable type software (here), ...	2009-03-17
2053	What a difference a MySQL Index made If you add an index to a column in a MySQL table, you provide a very quick way of looking up a row or set of rows based on the value in a certain column, but at the expense of additional disc space and a bit more internal management. Here's an example in which I look up a record (by URL) in a table ...	2009-02-25

sample_mysql_table

Create a table with duplicate records to remove as an exersize