C# Generics
C# Generics are really useful when we want to reuse a class for different types and with constraints on what those types would be without...
C# Indexers
C# Indexers is a simple implementation of key/value pairs using Dictionary type. Below is a sample implementation of a telephone directory –TelephoneDirectory class using System.Collections.Generic; namespace Indexers...
C# Inheritance
We generally apply the concept of inheritance to implement a IS-A relationship. For example to implement a relationship that says an Apple is a Fruit...
C# Interfaces and how to implement loose coupling by Dependency (specific implementation of interface) injected via constructor overloading
Interface is a similar language construct such as class, but fundamentally different from a class. Some people claim that Interface is a way to implement...
C# Abstract Classes Vs Interfaces
We use abstract classes when the base class can’t have concrete implementation and that we need the derived class to fully implement it. If at...
Simple Stop Watch implementation in C#
Below is a simple stop watch implemented in C#, enjoy!StopWatch using System; namespace StopWatchApp { public class StopWatch { public DateTime StarTime { get; set; } public DateTime StopTime { get; set; } public string ClockState { get; set; } public void StartClock() { if(this.ClockState == "started") throw new InvalidOperationException("Invalid Operation"); this.StarTime = DateTime.Now; this.ClockState = "started"; }...
Simple Workflow Engine Implementation in C#
Below is a simple implementation of work flow engine using interfaces and the concept of injecting overloaded class implementations via the dependent class method. The...
Data Types, Variables, Primitive Type, Non-Primitive Type, Reference Type and Value Type
Every programming language allows to define and classify data so we can use it appropriately in various parts of the program in the correct form...
Building your Employee
Your Employee is your company’s pillar who keeps your company going and succeed. Their happiness, joy and right mental state is the core to your...
Using Code First first
Traditional ways of software development focus on DB-first implementation methodology. But we are in the realm of latest developments and ORM models has taken us...
Using Extension Methods in C#
Extension methods are a way to add methods to a class without changing its source code or adding it into a derived class. Creating extension methods example...
C# Events and Delegates
We use events and delegates to extend applications and to implement loose coupling. Rather than adding various method calls within an implementation and then recompiling the class,...
Using C# Delegates
Delegates is a way to support addition of multiple features (eg: methods) to a framework without the need to recompile the core class that...
Preferred Multithreading in C# ASP.NET
Parallel execution has been one of the core techniques of programming languages that enables and stabilizes the heavy orchestrated flow of information across information management...
Software Project Size
Software Project Size is of great importance since it determines the level of management controls and the types of tools and technologies required for a...
Effort Devoted To Building Software
Studies show that more effort is devoted to software maintenance (including software enhancement, adaption to new technologies and bug fixing) than for software development activities...
Software Engineering then and now
Software Engineering is and will be the backbone and driving force behind the technological advancements that we enjoy and that will lead us to greater...
Importance Of Design Patterns
Design patterns in general helps you to implement standardized and efficient solutions to software design and programming problems. Design patterns are not pure inventions like...
C# Lambda expressions
Lambda expressions are anonymous methods that does not have access modifiers, name or a return. They are used for convenience (less code) and makes code...
Walking your life with Jesus
God gave us this life and he gave us a soul and body in his own likeness. His never ending love for his own creation...
Who is Jesus?
Who is Jesus? This is a question that is being asked by many and a question that we need to ask ourselves – Who is Jesus...
Mind of Jesus
Has anyone thought how mind of Jesus would be? Has anyone tried to know the mind of Jesus? 1 Corinthians 2:15 talks about a few...
How do we have to accept Jesus?
How many of us have tried to accept Jesus into our heart so that the fullness of God’s love and fruits of Holy Spirit reflects...
Positive Thoughts And Right Actions
Thought is the pre-process for action. We as responsible humans want fruitful actions that leads to overall betterment of the society and fellow beings. Hence...
Data warehousing – Defining data
Two kinds of definitions relevant to data warehouse design are the definition of business terms and definition of data elements. Data element definitions help the...
Data warehousing – Data warehouse Project Management
Characteristics of successful data warehouse projects generally include the following aspects – Clear business justification for the project ie. measurable benefits must be defined for...
DATA WAREHOUSE PROJECT LIFE CYCLE – Ongoing maintenance and changing user requirements
Ongoing maintenance is the final phase of creation of a data warehousing system. The ongoing maintenance of data warehouse generally involves constant loading of new...
DATA WAREHOUSE PROJECT LIFE CYCLE – Design and implementation-Engineering
Once the application is well defined, data warehouse developers are able to begin making technical decisions about building the logical & physical design of the...
DATA WAREHOUSE PROJECT LIFE CYCLE – System study & Analysis-Pre-engineering
Pre-engineering is the time to define the goals of the application, to make the initial analysis of the system and make other decisions. This includes...
Data warehousing – IMPORTANCE OF DATA WAREHOUSING IN IT
Data warehousing has a great relevance in IT since it provides an Integrated Information management solution that aids in providing the right information, in the...
Data warehousing – OLTP systems and Datawarehousing
We shall compare the ordinary OLTP systems & the Data warehouse systems w.rt the type of data that they handle and shall point out how...
Data warehousing – Concept
In the present day competitive & technology centric information age, business enterprises are realising that the enterprise data is valuable resource just like other resources...
Data warehousing – Data warehousing technology
Throughout the history of systems development, the primary emphasis had been given to the operational systems (simple OLTP -Online transact ion processing systems) and the...
Data warehousing – Project Scope
A typical project scope for Data warehousing is as below – Title: APPLYING DATA WAREHOUSING The major goal & effort on working on the project is to...
Data warehousing – Need for Data warehousing
The need for an effective information management solution is of top priority in today’s changing & competitive business environment. Various Information systems like OLTP systems,...
DB2 Reorg and Run stats commands – life saver
Below are some life saver commands for DB2 admin for reorg and subsequent runstat – Reorganising tables:: This process helps in bringing together of widely...
A typical DB2 DB config
Below is a tuned DB config for a heavily loaded workflow application – [db2inst1@intranet db2inst1]$ db2 get db cfg for wf Database Configuration for Database...
A Typical IT Backup Policy and Backup procedure
Lets see how back up policy was important for a typical IT company and how did it implement the same. Background: As we progress in...
SPDT, SPST switches and fuses
Below are schematics of standard SPDT and SPST switches and fuses – ...
Wiring – Nose Plier
Another indispensible tool of an electrician –...
Electrical Soldering
Below schematic shows electrical soldering and equipments/materials used –...
Cut Plier – Wiring man’s freind
Schematic for mighty cut plier – Cut plier in almost indispensible for any wiring work. Pliers are used for gripping or holding small objects by...
Good Old Mallet!
Schematic for a good old mallet for wiring work –...
Wiring – Bends
Below are schematic of various bends used in electrical wiring –...
Junction boxes
Below are schematic of 3 and 4 way Junction boxes mentioned in the wiring articles –...
How to do Hospital Wiring?
Ok, here is a definitive article on how to set up Hosptial wiring – hands on. Read on – List of material needed – 1)...
Tunnel Wiring
Here is a definitive way to set up Tunnel Wiring by yourself – List of Materials needed 1) 230 V, 5A SPDT switches – 3...
Hands on Wiring – Godown Wiring
Ok, here is a definitive article on how to set up godown wiring – hands on. Read on – List of material needed – 1)...
Fuse is provided only in phase and never on nuetral, Why?
The main function of a fuse is to protect the electrical appliances connected in a building from damage by blowing out under faulty or high voltage...
Wiring Practice – Staircase wiring
A simple and practical way to set up staircase wiring is explained here. To operate a lamp from two different points by two switches at...
Sample Linux server (web centric) back up script in PERL
Below is a sample, detailed, PERL script for backing up your web centric Linux server. It includes ways to creating tgz of required areas, pushing...
Paper – Server Synchronization Technology for a Distributed server architecture (DSA)
Requirement: Company xyz has now decided to extend the current system as distributed server architecture, expanding over 46 locations. There will be a central server...
Sample Linux-Apache-PHP-DB2 installation instructions
Below is detailed customized installation for Linux-DB2 – 1. Suggested PC configuration for medium sized installations – P4 or above – 256 MB or above...
Sample (cheap) Web application architecture
A sample customized web application architecture is as shown below – As shown above, all the three tiers of the web server architecture, namely database...
Sample PL/SQL script for cleaning a detail table referring a master table
Have you ever had a need to write a PL/SQL snippet to clean a table. If you are in need, here is one below –...
Sample Perl program for cleaning database on a routine basis
Here is a samlpe Perl Program that gives you an outline on how to deal with cleaning DB on a routine basis (ofcourse scheudled via...
Comparing roles of a System Analyst and other IT professionals
A system analyst is a person of multifaceted role who has to deal with each and every function of a system. He is involved in...
Attributes of a Good System Analyst
A system analyst is a person who conducts a methodical study and evaluation of various aspects related to business to identify the desired objectives and...
Decision Table
A decision table represents the comlex decision logic associated with a data-processing job. A decision table summarized the action to be taken depending on the...
System Life Cycle – Classical definition
A system is a set of interacting elements that responds to inputs producing outputs. The events which together make up the development, operation and maintenance of...