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  How Query Optimizer Works in RDBMS

In a previous post, we discussed how the various relational operators are implemented in relational database systems. If you have read that post, you probably still remember that there are a few alternative implementations for every operator. Thus, how should RDBMS determine which algorithm (or implementation) to use? Obviously, to optimize the performance for any query, RDBMS has to select the correct the algorithm based on the query. It would not be desirable to always use the same algori...

   DATABASE,DATABASE DESIGN,DATABASE OPTIMIZATION     2019-04-20 07:26:32

  11 Important Database designing rules

Introduction Before you start reading this article let me confirm that I am not a guru in database designing. The below 11 points which are listed are points which I have learnt via projects, my own experiences and my own reading. I personally think it has helped me a lot when it comes to DB designing. Any criticism welcome. The reason why I am writing a full blown article is, when developers sit for designing a database they tend to follow the three normal forms like a silver bullet. They...

   Database design,Rules,OLAP     2012-04-12 05:51:38

  Java Interview Questions

Currently there are many articles online which summarize the list of Java interview questions. Some cover lots of basic questions and some cover some specific questions in specific area such as multithreading. In this post, we will not cover the really basic questions, we will cover something different. For basic question, you can read Java Interview Questions。 Basic What is primitive data type? How many primitive data types in Java? What are they? -- A primitive type is prede...

   JAVA,SECURITY,INTERVIEW,CAREER,MULTITHREADING,QUESTION,JAVA INTERVIEW,JAVA CORE     2019-01-21 07:07:08

  Man Survives Steve Ballmer’s Flying Chair To Build ’21st Century Linux’

Mark Lucovsky, famous for building Windows NT and watching Steve Ballmer throw a chair.Mark Lucovsky was the other man in the room when Steve Ballmer threw his chair and called Eric Schmidt a “fucking pussy.”Yes, the story is true. At least according to Lucovsky. Microsoft calls it a “gross exaggeration,” but Lucovsky says that when he walked into Ballmer’s office and told the Microsoft CEO he was leaving the company for Google, Ballmer picked up his chai...

   VMWare,Founder,Mark Lucovsky,Microsoft,Google,Cloud Foundry     2011-11-25 03:00:39

  Display GIF animation while submitting the web form

Internet appears everywhere in our life. Form as a data gathering component is the must have component in a web app. When the page is submitting data to the server, if it takes a relative long time for the backend server to process the data, then the client users will feel lost while waiting for this if he cannot get any indication about what's happening. They may even reclick the button which will cause the data resubmission. This affects the user experience and also the system performance and ...

   HTML,Spin,Submit,Form     2013-05-17 11:47:07

  5 Innovative Web Design Trends Startups Should Consider Adopting

Nowadays, every market has the tendency to shift and change on a whim, and it is no different in the world of web design. No one in their right minds has the time to sit and watch the market for possible shifts as it takes up too much time and no one can really predict what’s going to happen so we’re just forced to adapt and improvise. Currently, there are 5 trends that have caused an uproar and have reshaped the online marketplace and are worth looking into. Think Big First an...

       2017-11-02 06:12:47

  Install LAMP in two easy steps

You might have seen my earlier post related to installing PHP, Apache and MySQL on UBUNTU 11.10. That process contains number of steps and some lengthy commands which we can not remember easily. After good comments from Gaurav and Coward I have managed to get that lengthy process in just 2 steps. So I thought its great to share with all readers to they can get benefit as...

   LAMP,PHP,Steps,Tutorial     2012-04-30 09:15:28

  Top 7 programmers bad habits

1.- The all code is crap, except mine, attitude. I have bad news for you buddy, all code is crap. No matter how much effort you put on it, there is always a majority of programmers who are going to think that your code sucks and that they could have done it 10 times better. I have already covered this topic in previous posts, you can find more information of what exactly I mean when I say that all the code is crap here and here. How to fix it: Don’t criticise others people code, it ...

   programming,habit,tips     2011-06-07 00:36:22

  HTML Email Guide

Many of us may subscribe to some newsletters to get update about their site or information about a topic such as JavaScript Weekly, we may receive an email every week or every month to know what's happening there. The email we receive is just a simple HTML page but with an Email format called HTML Email. It seems it's simple to write this kind of HTML Email. But the thing is it's not so easy. It takes much effort by just designing an Email template. Whether the HTML Email can be displayed norm...

   HTML Email,Guide     2013-06-16 03:38:36

  7 big mistakes that make your layout a disaster

Even though the web design field has become a real industry, building a website is part art, part science. The design of a website may attract people but it may also make them run away, it depends on the work of the web designer. The experience, the talent and the capacity of endeavor are the greatest tools of a web designer, a good layout is based on all of these and, besides that, it is a very time consuming activity.Making a good layout is difficult and judging its value is subjective, a desi...

   Web design,Mistakes,Content,White space     2011-11-24 03:36:23

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