SEARCH KEYWORD -- Data structure alignment
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
Stuff Everyone Should Do (part 2): Coding Standards
Another thing that we did at Google that I thought was surprisingly effective and useful was strict coding standards. Before my time at Google, I was sure that coding standards were pointless. I had absolutely no doubt that they were the kind of thing that petty bureaucrats waste time writing and then use to hassle people who are actually productive. I was seriously wrong. At Google, I could look at any piece of code, anywhere in Google's codebase, and I could read it. The fact that I wa...
Programming,Code standards,Rules,Stringe 2011-08-15 07:33:02
Benefits and Drawback of a Layered Architecture
Most enterprises today are application centric. But the problem with the application is that their database schemas, user interfaces, programming interfaces and object models are tightly coupled and difficult to change. If you want to add a new field to a database table and you’re lucky, the change will reflect through the entire system. But often the change needs to be replicated manually across the entire system. And as applications are difficult to change, adding business rules or proce...
JAVA, PROGRAMMING,WEB DEVELOPMENT,ENTERPRISE APPLICATION 2017-05-04 08:19:34
In praise of impractical programming
Although it’s become a cultural mainstay now, I still remember when I first saw that thick book — the one with the wizard on the cover — about a school for magic where wonders are easily conjured by those who know the proper spells. Of course, I’m talking about the Structure and Interpretation of Computer Programs. There was that other book with the spells, but the “Wizard Book†sincerely claimed to teach magic. For the past few years, I’ve been ...
Impractical Programming,Structure,Scheme,Practical 2011-12-05 12:28:58
10 Tips To Make Your C Program Effective
The beauty of any code lies not only in finding the solution to a given problem but is in its simplicity, effectiveness, compactness and efficiency( memory ). Designing the code is harder than actually implementing it. Hence every programmer should keep a couple of basic things in mind while programming in C. Here we introduce you to such 10 ways of standardizing your C code. 1. Avoid unwarranted function calls Consider the following two functions: view source print? 1 void str_print( c...
C,Tips,Efficient,Speed increment,Recursi 2011-08-05 01:34:16
Automatically Updating Charts for Additional Data in Excel
Excel shines at turning your data into charts—graphical representations of your data. You can easily create a chart based on a range of data in a worksheet. Normally, if you add additional data to your range, you will need to once again create the chart or at best change the range of cells on which the chart is based. If you get tired of modifying charts to refer to new data ranges, there are a couple of shortcuts you can try out. The first shortcut works fine if you simply need to...
Excel,Graph,Auto update,New data,Automat 2011-08-13 04:36:53
Three ways to define class in JavaScript
In object oriented programming, class is the template of object, it defines the properties and methods of a group of objects. Unfortunately, JavaScript doesn't support class, but we can have some workarounds to simulate class.1. Constructor functionThis is the classical approach, it is also the approach mentioned in many text books. It uses the constructor function to simulate class and it uses the keyword this to represent the object internally.function Cat() {  this.name = "Kelly...
JavaScript,Class,Method,Private,Inheritance 2012-07-09 11:59:51
6 necessary WordPress plugins for personal blogs
WordPress is now adopted by most bloggers, it has various themes and powerful plugins. There are lots of amazing plugins can be chosen such as spam comment filers and sitemap generators. For novice WordPress users, you may be confused about which plugin to choose, here we share with you 6 necessary WordPress plugins. Akismet Akismet is a built-in WordPress comment plugin. It checks your comments against the Akismet web service to see if they look like spam or not and lets you review the spam it ...
WordPress plugin,Comment,Sitemap 2013-08-05 03:18:40
Select top 3 values from each group in a table with SQL
Yesterday, my friend Liu Bing asked me a question about how to select top 3 values for each person in a database table using SQL. I think this question is interesting and it deserves some thoughts. Here I record down how to solve this issue. Assume we have a table which has two columns, one column contains the names of some people and the other column contains some values related to each person. One person can have more than one value. Each value has a numeric type. The question is we want to se...
SQL,Correlated query,top 3 2013-05-23 03:21:25
How to Understand and Use nil in Golang Correctly?
In Golang, nil is a predefined identifier that carries different meanings in various contexts, but typically represents "none", "empty" or "zero value". It can be assigned to variables of pointer, slice, map, channel, function, and interface types. Understanding the significance of nil is crucial for writing robust Go programs, as mishandling nil can lead to unexpected issues. nil in Pointers In Go, pointers are a fundamental type that stores the memory address of a variable. When a pointer is d...
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