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Indexing is commonly used among programmers. Without fully grasping the idea behind the technique, a programmer is always eager to take advantage of it whenever they encounter a query performance problem, only to get disappointed by the result on many occasions. By analyzing the principle of indexing, the article tries to show programmers when is the appropriate time to use an index and how to use it.
The purpose of indexing is to quickly find…Continue
Added by JIANG Buxing on August 29, 2017 at 12:30am — No Comments
If a person wishes to relax himself, travelling is probably the best pick for most people. Choosing the right place to stay for your vocation is one of the most important parts in a travel, but how to do so may be a problem. Reading through reviews of a certain hotel may be a good choice, referring to visitors’ experience, you get to know some more specific details about the hotel, however, this method is not comprehensive enough, and reading a bunch of reviews would irritate you. Here is a…Continue
Added by Zhouyiming on August 28, 2017 at 12:00am — No Comments
By JIANG Buxing
In the previous article, we discussed the necessity of the existence of a computing layer in the reporting architecture. Reporting tools support the user-defined interface-based programming with its host language (i.e. the programming language used for developing a reporting tool) to achieve the functionality of a computing layer for implementing complex computational logics, but the strategy reveals some real-life problems. An explicit data computing layer…Continue
Added by JIANG Buxing on August 24, 2017 at 10:30pm — No Comments
Interesting Infographics produced by Villanova University.
Originally posted here.
Added by Vincent Granville on August 21, 2017 at 9:34am — No Comments
There are numbers that are so large that there is no compact formula to represent them. Think of a number so large, that its number of digits is so large, that the number of digits of its number of digits is so large... and it goes on and on -- you get the idea.
Sure, if you are able to define such a number, then add one, or even 0.5, and you get an even bigger number. But this is not the point. The issue is to come up with such massive numbers in the first place. The biggest…Continue
Added by Vincent Granville on August 16, 2017 at 1:00pm — No Comments
There is an estimated 50 Petabytes of data in the health care realm, predicted to grow to 25,000 Petabytes by 2020, reported by a new info-graphic from Oracle. From this astonishing data report, we can see that the healthcare industry is generating a huge amount of data, driven by clinical records, medical care and compliance & regulatory requirements.
Luckily, big data analytic application has been widely used in…Continue
Added by Paul Black on August 10, 2017 at 7:00pm — No Comments