Using SQLFiddle

Hi Guys, this is my second blog post of this month. The title is “Using SQLFiddle”. In this post I am going to explain about a very useful online tool SQLFiddle which I have been using for a while. As JSFiddle is used to run and test CSS, JQuery etc, using...

Setup node.js mongodb Development Environment on Ubuntu

Below are the step to setup the development environment of node.js using Mongodb: Open terminal and add the repo executing follwing command on console  sudo add-apt-repository ppa:chris-lea/node.js Execute sudo apt-get update Execute sudo apt-get install nodejs Once...

How to create MongoDB indexes ?

In simple words “indexes are used to speed up query performance”. Let’s say you have a query which takes around 120ms to execute without indexes i can assure you that with proper indexes you can reduce that time by at least 10 times. Let me show you...

How to delete MongoDB document ?

In this blog post i am going to explain how to delete MongoDB document. The are few ways which are illustrated below : If we execute remove on collection without any params then it will delete all records db.users.remove({}) // it will delete all documents along with...

How to drop a field from a MongoDb document ?

In this blog post we are going to see how to drop a field from a MongoDb document ? For people coming from RDBMS you must be remembering the alter table command for dropping/adding columns in a table. In MongoDB it is possible to do this operation on some of the...

Updating multiple documents in MongoDB

In this blog post we are going to learn the process of updating multiple documents in MongoDB. MongoDB provides us with update() function to achieve the same. Here are few use cases : db.users.find(); { "_id" : ObjectId("537da62d770359c2fb4668e2"),...

MongoDB : Difference between save and insert

MongoDB uses save and insert option for adding new records in the database. Let me explain the difference between two : Insert : insert is used to add a document in a mongodb collection Save : save is used to add as well as update a document in a mongodb collection....

Generate CSV file using MYSQL command

Hello Guys! This is my first blog post of this month and the topic is “Generate CSV file using MYSQL command” In this post I will discuss about an interesting feature of MYSQL. MySQL provides an easy way for generating csv files by writing the output of a...

Tracking another repository in Git

Recently, I had to create few pull requests to other repositories and in order to do that I had to track the code on some repositories for updating my copy and finally publishing my changes to them. In such situation following steps/commands can help: Add the...

THE ANATOMY OF ARM CORTEX M0/M0+ PROCESSORS

ARM stands for Advanced RISC Machines where RISC stands for Reduced Instruction Sets Computer. The ARM Cortex M0 processor is an eligible choice for Energy Efficient Embedded Products. The features of these processors are Low Power usage, Highly Energy efficient,...

Parse JSON using Command Line.

Hello Guys! This is my second post of this month. In this post I will be explaining on how to parse JSON using command line. A command-line processor can be used to test or debug JSON responses from server. We can easily feed JSON responses from web server into the...

Use Geb in Cucumber functional automated testing

Today we are going to learn how to use Geb in Cucumber functional automated testing? If you are new to Cucumber than please go through my blog. Cucumber Basic concept Fist-of-all if you want use Geb in your application than add these lines in BuildConfig.groovy def...

How to use Scenario Outline and Examples in cucumber?

Today we are going to learn how to use Scenario Outline and Examples in cucumber?. If you are new to cucumber functional automated testing than please go through my blog post Cucumber basic concept First-of-all create a feature file as LoginTest.feature and add these...