Création des Logiciels de gestion d'Entreprise, Création et référencement des sites web, Réseaux et Maintenance, Conception




Création des Logiciels de gestion d'Entreprise, Création et référencement des sites web, Réseaux et Maintenance, Conception










If you attended Google I/O 2009 a few weeks ago, you may have noticed a kiosk station on the 2nd and 3rd floors of Moscone West labelled 'Interactive Conference Map, powered by Google Maps'. The kiosk simply pointed to a JavaScript Maps API-based interactive map of the venue I created in my 20% time.
SELECT Author, COUNT(*) as NumArticles
FROM Magazines
GROUP BY Author
ORDER BY NumArticles;
SELECT Author, COUNT(*) as NumBooks
FROM Books
GROUP BY Author
ORDER BY NumBooks;SELECT Author, NumPublications, PubType
FROM (
SELECT Author, COUNT(*) as NumPublications, 'Magazine' as PubType, 0 as SortIndex
FROM Magazines
GROUP BY Author
UNION
SELECT Author, COUNT(*) as NumPublications, 'Book' as PubType, 1 as SortIndex
FROM Books
GROUP BY Author
)
ORDER BY SortIndex, NumPublications;
CREATE TRIGGER IF NOT EXISTS RemoveAuthor
AFTER DELETE ON Books
BEGIN
DELETE FROM Authors
WHERE Author NOT IN
(SELECT Author
FROM Books);
END;
We'll get into more detail on triggers and how to use them in another performance post to come.
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Leave a comment………….. if serials are not working………………….
2013, By: Seo Master


Webmaster Level: All
The homepages of multinational and multilingual websites are sometimes configured to point visitors to localized pages, either via redirects or by changing the content to reflect the user’s language. Today we’ll introduce a new rel-alternate-hreflang annotation that the webmaster can use to specify such homepages that is supported by both Google and Yandex.
To see this in action, let’s look at an example. The website example.com has content that targets users around the world as follows:

In this case, the webmaster can annotate this cluster of pages using rel-alternate-hreflang using Sitemaps or using HTML link tags like this:
<link rel="alternate" href="http://example.com/en-gb" hreflang="en-gb" />
<link rel="alternate" href="http://example.com/en-us" hreflang="en-us" />
<link rel="alternate" href="http://example.com/en-au" hreflang="en-au" />
<link rel="alternate" href="http://example.com/" hreflang="x-default" />
The new x-default hreflang attribute value signals to our algorithms that this page doesn’t target any specific language or locale and is the default page when no other page is better suited. For example, it would be the page our algorithms try to show French-speaking searchers worldwide or English-speaking searchers on google.ca.
The same annotation applies for homepages that dynamically alter their contents based on a user’s perceived geolocation or the Accept-Language headers. The x-default hreflang value signals to our algorithms that such a page doesn’t target a specific language or locale.
As always, if you have any questions or feedback, please tell us in the Internationalization Webmaster Help Forum.
Posted by Pierre Far, Webmaster Trends Analyst
this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com