The INTERSECT and EXCEPT operators of SQL are not supported in MySQL. So there there seems a workaround, you use a join with all corresponding attributes equated in place of an intersection. For instance, to get the intersection of R(a,b) and S(a,b), write:     SELECT DISTINCT *     FROM R     WHERE EXISTS (SELECT * [...]

Hi All, Saving Electricity is very important. So please read this doc & see whether we can do that. Then forward as much as possible.

Lightning is the working project name for an extension to tightly integrate calendar functionality (scheduling, tasks, etc.) into Thunderbird. Lightning brings the Sunbird calendar to the popular email client, Mozilla Thunderbird. Since it's an extension, Lightning is tightly integrated with Thunderbird, allowing it to easily perform email-related calendaring tasks. Lightning is an iCalendar compatible integrated [...]

Only a few of us are aware that today is Computer Security Day, (http://www.computersecurityday.org/) which had lost its prominence in the global arena, but its still vital to remember something about computer/information security on this day. Some of you might think you are in a secure organizational environment, with all those big-big security precautions, what [...]

Computer Security Day is an annual event that is observed worldwide. It was started in 1988 to help raise awareness of computer related security issues. The goal of Computer Security Day is to remind people to protect their computers and information. Officially, Computer Security Day is November 30th. Computer Security Day is a great opportunity [...]