Hadoop Architecture
Apache Hadoop is a java based open source software. Basically, it’s a framework which is used to execute batch processing jobs on huge clusters. It is designed so that it can be scaled from a single server to hundreds of…
Dates and times with Python
Sometimes we have to work with dates and times. I use dates less than times because with times you can measure code execution time which is sometimes essential (for my website scraping book’s performance measurement is the core part I…
Object-Oriented Programming (OOP)
Now we arrived at object-oriented programming. This has (had) its hype where every language was designed around objects and Python developer Guido van Rossum thought “Why not?” and added classes to support object-oriented development. Some python evangelists think this was…
Python 3: Guess the number –The return
We have seen this example previously. There I included a lot of loops to handle user input and the main logic… Now it is time to refactor the application to use functions. This should make the code readable and we…
When should we use Row level DML triggers
A trigger is like a stored procedure that Oracle Database invokes automatically whenever a specified event occurs. Row level DML triggers are invoked for every row the specified DML statement touches (insert/update/delete). Since the database has to execute the trigger’s execution…
Hadoop vs RDBMS : Which one suits your needs?
The tech growth in the last decade has been so great that the things once considered inconceivable are now mainstream and the tasks too difficult that required a special skill set can now be completed by almost anyone. In the…
Python function
Now we have learned the basics of Python programming: variables, collections and loops. If you have followed the examples and the tutorial you might feel that sometimes we use too much code and it can be leveraged a bit. But…
Python 3 : Guess the number
Now let’s write a script which implements a basic “Guess the number” game. The rules of the game are:
Python loops
Python Loop allows to loop through the program code and repeat blocks of code until a given condition is fulfilled or not fulfilled. The code which is repeated is called the loop’s body. Python has two types of loops: the…
Python 3 conditional statements
Decision making with conditionals After this vast amount of introductory articles with the basic types of variables in Python 3, it is time to go on and introduce conditional operators which help us create an application flow based on different…