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12 DevOps principles read today

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DevOps means a concept to bring Development team and operation team together. So that you can speed up the deployment process. Before you start learning the tools you need to understand core principles.
The useful DevOps Principles to know for your project and interviewsTo deliver rapidly without affecting qualityCommunication and Collaboration are the key ideas in DevOps conceptMultiple deploys are possible- if code in Development team automatedOnce you commit the repository, it tests the code automatically against the automated test scriptsIf Build is successfully passed, it installs automatically in Testing environment When infrastructure is automated, it installs automatically to other serversMinor changes takes place in isolation, that means , it creates separate server to deploy minor changesSpeed in Devops, organizations to better serve their customers and compete more effectively in the market.Quality and Security teams are part of DevOpsAutomating the process, much better pro…
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Five Tableau functions you need for awesome data analytics

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Tableau Commands
Tableau Commands
The below are the few things that you need to do when you are very beginner with Tableau. Tableau 9 for Data Science engieers.

CONNECTING TO LOCAL FILE 
Tableau can connect to any local file or database such as
  • Excel 
  • Text File
  • Access 
  • Statistical File, or 
  • Other Database file
CONNECTING TO SERVER
Tableau can connect to your data server too. It can connect to almost any type of data server.
Below are some of the most popular databases that Tableau can connect:
  • Tableau Server
  • Google Analytics
  • Google BigQuery
  • Hortonworks Hadoop Hive
  • MapR Hadoop Hive
  • IBM DB2
  • IBM BigInsights
  • IBM Netezza
  • Microsoft SQL Server
  • Microsoft Analysis Services
  • Oracle
  • Oracle Essbase
  • MySQL
  • PostgreSQL
  • SAP
While working on Tableau, data can have Live Connection where any change in the source data will be automatically updated in Tableau. On the other hand, data can be Extracted to Tableau repository so that any change made here will not affect the original source data.


CONNECTING TO EXCEL FILE

To connect to an excel file, click “Excel” on the left hand side. Navigate to the file on your computer and double click to open it. For this tutorial, I will use a sample file that comes with the installation called “superstore”. You should open the appropriate file that you will be working with. 

Now you are in the data connection window. It looks like the following Notice that I have three sheets in this file Orders,People, and Returns. I can simply drag the table I want. If I drag more than one table,Tableau automatically creates the join between the tables.

Creating charts

Based on the data we connected is easy. At the bottom of the page, Click on a sheet, Tableau automatically separates the data into Dimensions and Measures. 

Dimensions are the categorical fields. These fields will create labels in the chart. Measures are the quantitative fields. These are the numbers we want to analyze. They create axis in the chart. Sometimes, it might be confusing what type of chart should be used for a specific data. Tableau has an interesting feature called “Show me”. “Show me” is the list of the possible charts that can be created using different combination of data.

CREATING DASHBOARD

Tableau Dashboard contains all the related features intuitively interconnected to provide interactive and real-time dashboard experience for non-technical users. To create a dashboard, click “New Dashboard” icon at the bottom the page. 
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Hyperledger Fabric Real Interview Questions Read Today

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I am practicing Hyperledger. This is one of the top listed blockchains. This architecture follows R3 Corda specifications. Sharing the interview questions with you that I have prepared for my interview.

Though Ethereum leads in the real-time applications. The latest Hyperledger version is now ready for production applications. It has now become stable for production applications.
The Hyperledger now backed by IBM. But, it is still an open source. These interview questions help you to read quickly. The below set of interview questions help you like a tutorial on Hyperledger fabric. Hyperledger Fabric Interview Questions1). What are Nodes?
In Hyperledger the communication entities are called Nodes.

2). What are the three different types of Nodes?
- Client Node
- Peer Node
- Order Node
The Client node initiates transactions. The peer node commits the transaction. The order node guarantees the delivery.

3). What is Channel?
A channel in Hyperledger is the subnet of the main blockchain. You c…
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