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Discussing Replication Lag in MongoDB

July 23, 2014 0 Comments
Discussing Replication Lag in MongoDB

In the previous article we have read about deployment of replica sets in mongodb. In the deployment process there is some complications that we did not discuss in the previous article. In this article we will get acknowledged with those complications and try to make them less complicated. So, in this article we are going [...]

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Deploying a Replica Set in MongoDB

July 22, 2014 0 Comments
Deploying a Replica Set in MongoDB

In this article we are going to discuss about how to deploy a replica set in mongo db. Deploying a replica set: Replica set can be deployed from single instances as well as from multiple instances. To get there we have to figure out how replica set function. As stated in mongodb.org replica set is [...]

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Short introduction on Express.js 4 New Features

July 21, 2014 0 Comments
Short introduction on Express.js 4 New Features

In this post we have tried to explain express.js 4 with some of it’s APIs. First of all, the new features of Express.js V4 – All the middlewares from connect are removed from Express. We have to bind all the middlewares in the project configuration file – package.json. A typical package.json file will look like [...]

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How to Promote Your Online Business

July 21, 2014 0 Comments
How to Promote Your Online Business

There is more than one way to skin a cat – and definitely more than one way to promote an online business. If you want to be sure your business and website are seen by as many people as possible, this article may help you achieve that aim. Every business needs to be promoted on [...]

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Introduction to Replication in MongoDB

July 18, 2014 0 Comments
Introduction to Replication in MongoDB

Mongodb has another feature called replication. In this article we will be going through the introduction and basics of replication. What is replication in mongodb? In simple terms replication is a process to synchronize data in multiple servers. This process provides us with redundancy and increases data availability with multiple copies of data on different [...]

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Map-Reduce in MongoDB

July 17, 2014 0 Comments
Map-Reduce in MongoDB

In this article we will try to understand the function of mapreduce in mongodb. At first we need to know what is map reduce? Let us see below. What is map reduce in mongodb? As per mongodb.org map-reduce in mongodb is a data processing paradigm for condensing large volumes of data into useful aggregated results. [...]

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Using sort method in mongodb

July 15, 2014 0 Comments
Using sort method in mongodb

In each database we maintain data in many ways. Regarding those ways we also have to consider the possibilities of sorting data in many ways regarding of many criteria. In this article we are going to understand different ways for sorting. Using sort method: sort() method accepts a document containing list of fields along with [...]

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How to Use Projection in MongoDB?

July 12, 2014 0 Comments
How to Use Projection in MongoDB?

In mongodb projection, it means  selecting only necessary data rather than selecting whole of the data of a document. If a document has 5 fields and you need to show only 3, then select only 3 fields from them. There are a few projection operators that mongodb provides helps us to reach that goal. Let [...]

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How to Import and Export Through Mongodb?

July 8, 2014 0 Comments
How to Import and Export Through Mongodb?

Introduction: Although while using mongodb we can create database and manipulate that same database. In real time we might have to import database from an external resource. That external database may be of json, csv or tsv file. And in other hand we might have to export mongodb database as Json format. In this article [...]

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How to Get Started with MongoDB (part II)

July 5, 2014 0 Comments
How to Get Started with MongoDB (part II)

In the previous article we have learned about mongodb as well as we have learnt how to install them in different OS. In this article we will learn how to run in different OS and many other things. How to get started with mongodb? To begin with mongodb we need to connect to a server [...]

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How to Get Started With Node?

July 4, 2014 0 Comments
How to Get Started With Node?

The face of web development today is dramatically different. The things that we can do on the web nowadays with JavaScript running on the server, as well as in the browser, were hard to imagine just several years ago, or were encapsulated within sandboxed environments like Flash or Java Applets. What is node.js? As Wikipedia [...]

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How to Get Started with MongoDB (part I)

July 1, 2014 1 Comment
How to Get Started with MongoDB (part I)

What is MongoDB? Mongodb is a cross-platform, document oriented database that provides, high performance, high availability, and easy scalability. It works on concept of collection and document. If the load increases, by adding more nodes. The performance can be retained. It can be used to store data for very high performance applications. What is document [...]

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Making a Stacked Bar Chart in D3

June 28, 2014 1 Comment
Making a Stacked Bar Chart in D3

Wherever we see data visualization we can see a bar chart. Weather it is a management issue or a project planning, even normal data visualization are also done by bar charts. For this reason bar charts have been modified in various type along the way. Previously we talked about basic and grouped chart. In this [...]

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D3 Scatter Plot

June 27, 2014 1 Comment
D3 Scatter Plot

So far, we’ve drawn only bar charts with simple data — just one-dimensional sets of numbers. But when you have two sets of values to plot against each other, you need a second dimension. What is scatter plot? The scatter plot is a common type of visualization that represents two sets of corresponding values on [...]

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Drawing Pie Chart in D3

June 26, 2014 0 Comments
Drawing Pie Chart in  D3

D3.js is a JavaScript library that is widely used in data visualization and animation. The power of d3.js and its flexibility comes at the expense of its steep learning curve. There are some libraries built on top of it that provide numerous off-the-shelf charts in order to make the users’ life easier. Its power comes [...]

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How to Create a Group Chart in D3

June 25, 2014 0 Comments
How to Create a Group Chart in D3

A bar chart is a simple yet perceptually-accurate way to visualize such data. This introductory tutorial covers how to make a bar chart using the D3 JavaScript library. Now we’ll integrate everything we’ve learned so far to generate a simple bar chart with D3. We’ll start by reviewing the bar chart we made earlier using [...]

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D3 Multiline Chart

June 25, 2014 0 Comments
D3 Multiline Chart

In the previous article we have talked about line charts. The example we worked on was a single line chart. We have worked with only single line . But there will be circumstances where we will be in need of draw chart with more than one set of data. So, what it will look like? [...]

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Introducing Line Chart Through D3

June 24, 2014 0 Comments
Introducing Line Chart Through D3

One of the most common visualizations is a line chart. D3 is not a charting framework, but instead allows you to manipulate the document based on data. That’s what you’re actually doing with D3: adding elements to a document, removing them, updating them, etc. The advantage is that you are much more flexible in creating [...]

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Working Through Angular.js With Transclude

June 24, 2014 1 Comment
Working Through Angular.js With Transclude

Once you dive into Angular, creating custom directives is a daily chore and having good understanding of transclusion becomes imperative. To explain it in one sentence, transclusion consists of plucking out the content of a custom directive, processing it against right scope and then placing it at a marked position in the template of that [...]

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Introduction to Chart in D3

June 23, 2014 0 Comments
Introduction to Chart in D3

A bar chart is a visual representation using either horizontal or vertical bars to show comparisons between discrete categories. There are a number of variations of bar charts including stacked, grouped, horizontal and vertical.We will work through a simple vertical bar chart that uses a value on the y axis and date values on the [...]

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