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Medium 9780596527082

16. Using Stored Routines, Triggers, and Events

Source: MySQL Cookbook
Slice ePub May 27, 2014

This chapter discusses the following kinds of database objects:

A stored function performs a calculation and returns a value that can be used in expressions just like a built-in function such as RAND(), NOW(), or LEFT(). A stored procedure performs calculations for which no return value is needed. Procedures are not used in expressions, they are invoked with the CALL statement. A procedure might be executed to update rows in a table or produce a result set that is sent to the client program. One reason for using a stored routine is that it encapsulates the code for performing a calculation. This enables you to perform the calculation easily by invoking the routine rather than by repeating all its code each time.

A trigger is an object that is defined to activate when a table is modified. Triggers are available for INSERT, UPDATE, and DELETE statements. For example, you can check values before they are inserted into a table, or specify that any row deleted from a table should be logged to another table that serves as a journal of data changes. Triggers are useful for automating these actions so that you dont need to remember to do them yourself each time you modify a table.

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Medium 9780946439195

7. The setting of analysis

Slice ePub May 23, 2014

To pursue the practice of analytical psychotherapy it is necessary to create a situation in which the patient can bring complex and highly charged affects, struggle with them and find a solution better suited to himself as a whole. In this he will need to get into fluid states when he will be uncertain of what is happening and become confused or temporarily disorientated. So there is need for a stable setting. This is partly expressed in the analyst’s provision of a room that is quiet, warm and reasonably comfortable where he will be found at regular intervals. Furthermore he will maintain his analytical attitude whilst the transference neurosis is being worked on.

In part the framework is impersonal but it is full of personal but non-verbal communications that derive from the analyst having chosen and furnished his room; the furniture, pictures, decorations are arranged to suit him, to make a setting in which he feels comfortable, and which express the parts of himself that he likes to have on view. In arranging his room he will have had patients in mind and so nothing very unusual may be expected in it.

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Medium 9781601322593

A practical study of the problems of current Internet routing tables

Slice PDF November 04, 2014

Int'l Conf. Security and Management | SAM'13 |


A practical study of the problems of current

Internet routing tables

Arnav Ghosh, Bruce Hartpence, Daryl Johnson

School of Informatics,

Rochester Institute of Technology

Rochester, NY USA

Abstract - The phenomenal growth of the Internet amazes even the creators of this worldwide network. Apart from the constantly changing data protocols and services that the

Internet has to adapt to, the sheer volume of users has been one of the biggest challenges the Internet is coping with. This paper is directed towards the study of Internet scale routing tables in a lab environment to understand the dynamics of route processing by routers, and the effect of increasing the number of routing table entries on the overall performance of the router in terms of packet forwarding. This study is an effort to simulate an Internet scale network in the lab to shed light on some of the practical problems of the Internet routing table size and its performance and the security implications.

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Medium 9781855750852


Slice ePub May 22, 2014

A LADY a former patient of mine who had retained her interest in psycho-analysis, called my attention to the case of a little boy, which she surmised would be of general interest.

The case was that of a five-year-old boy, Arpid by name, who according to the unanimous reports of all his relatives had developed up to the age of three and a half in quite a regular way both mentally and physically, and was said to have been a perfectly normal child; he spoke fluently and shewed considerable intelligence.

All at once he became quite different. In the summer of 1910 the family went to an Austrian spa, where they had also spent the previous summer, and took rooms in the same house as in the year before. Immediately after the arrival the child’s demeanour changed in a curious way. Hitherto he had taken an interest in all the goings on, both indoors and out of doors, that might attract the attention of a child; from now on he was interested in only one thing, and that was the fowl-house in the courtyard of the dwelling. Early in the morning he hastened to the poultry, watched them with tireless interest, imitated their sounds and movements, and cried when he was forcibly removed from the fowl-run. But even when he was away from it he did nothing else but crow and cackle. He did this unintermittingly for hours at a time, and answered to questions only with these animal cries, so that his mother was seriously concerned lest her child would lose his power of speech.

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Medium 9781449397975

8. Advanced CSS

Slice ePub May 27, 2014

Chapter4 introduced the basics of Cascading Style Sheets. In other chapters, you learned how to use CSS to style links, navigation bars, text, and tables. You can go a long way in web design with just those basic techniques (and many people do). However, to really become a web-design expert, there are a handful of advanced CSS concepts you should grasp. Fortunately, Dreamweaver includes tools to help you with these concepts so you can work more efficiently and avoid those head-scratching Why the heck does my design look like that?! moments.

This chapter will help you on your journey from CSS novice to master. But keep in mind that its the rare mortal who understands everything about CSS from reading a single chapter. If you really want to know the ins and outs of CSS, check out CSS: The Missing Manual.

Its pretty easy to learn how to use tag, class, and ID styles. To be technically accurate, all these styles arent really styles. In CSS lingo, theyre selectors, instructions that tell a browser what it should look for so it can apply CSS formatting rules. For example, a tag selector (not to be mistaken with Dreamweavers time-saving selection tool, the Tag Selector) tells a browser to apply the formatting to any instance of a particular tag on the page. Thus, browsers apply h1 tag styles to all <h1> tags on a page. They apply class selector styles, on the other hand, only when they encounter the class name attached to an element on a page. Similarly, browsers apply ID selector styles to a tag with a matching ID name. For example, <body id=home>. (Flip back to Types of Styles for a review of key differences between class and ID selectors.)

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