Who is a Data Scientist ? What is Data Science ?

Data Scientist:

Data Scientist is a Magician, Mutant… just kidding :), but some employers expecting magical outcomes from Data Scientist. At the same time some employers titled ‘Data Scientist’ for the employee who is developing Business Intelligence report. These are the facts that I am observing in USA and the world following the same pattern. Even in Silicon Valley, some of the world’s leading technology companies calling report developers as Data Scientist, which is fundamentally wrong.

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BIG Data Hadoop Spark Application Simple Architecture

This post is regarding a simple BIG Data / Hadoop Spark Architecture to support Data Science, Machine Learning and Advanced Analytics. Excluding the platform aspect, not getting in to "how many clusters, nodes, name nodes, data nodes and so on". It is simply focused from the functional application point of view rather than platform point of view.

Source Data: It contains Unstructured, Semi-structured and Structured data. Example e-commerce, trading, click stream...

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Explain about Data Scientist role, qualifications, salaries, responsibilities, requirements and job trends?


What is the scope for Pegasystems career and jobs ? Whether to learn Pegasystems technologies for career advantage or not?


What is the default visual interaction in Power BI ?
How to change default visual settings in Power BI ?
How many types of interactions are there in Power BI ?.


Difference between MSBI and Power BI ?(user question - answer)

T A B L E A U


TABLEAU INTERVIEW QUESTIONS


TABLEAU CERTIFICATION DETAILS


TABLEAU JOB OPENINGS


TABLEAU SAMPLE DATA


TABLEAU SAMPLE RESUME

P O W E R B I

POWERBI INTERVIEW QUESTIONS


POWERBI CERTIFICATION DETAILS


POWERBI JOB OPENINGS


POWERBI SAMPLE DATA


POWERBI SAMPLE RESUME

Q L I K V I E W

QLIKVIEW INTERVIEW QUESTIONS


QLIKVIEW CERTIFICATION DETAILS


QLIKVIEW JOB OPENINGS


QLIKVIEW SAMPLE DATA


QLIKVIEW SAMPLE RESUME

M S B I

MSBI INTERVIEW QUESTIONS


MSBI CERTIFICATION DETAILS


MSBI JOB OPENINGS


MSBI SAMPLE DATA


MSBI SAMPLE RESUME

PYTHON

PYTHON HOME PAGE


PYTHON FOR BEGINNERS


PYTHON INTERVIEW QUESTIONS


PYTHON SAMPLE DATA


PYTHON SAMPLE RESUME


What are the differences between Python 2.x vs Python 3.x (2.7 vs 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9), when to you which version ?

The following are some of the key differences between Python 2.x and Python 3.x:

• strings are Unicode by default
• clean Unicode/bytes separation
• exception chaining
• function annotations
• syntax for keyword-only arguments

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What is DAX in Power BI ?
How to implement DAX in Power BI ?
What are the most commonly used DAX functions in Power BI ?
Sample DAX Formula in Power BI

What is DAX:

DAX (Data Analysis Expressions) helps in creating new information from existing information (or) data. The existing information can be at detail level, using DAX we can create information such as aggregated, summarized and so on.

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Explain Tableau Architecture or Framework ?

Conceptually Tableau Architecture contains the following components:

Client or Source Data : OLTP, OLAP, Files, Multidimensional Data and others

Data Connectors : Tableau Fast Data Engine, SQL Connectors, MDX Connectors and Repository

Main components : Data Server, VizQL (Vizual Query Language) Server and Application Server


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TABLEAU FOR BEGINNERS, INTERVIEW QUESTIONS and ANSWERS, INSTALLATION AND DOWNLOADS, SAMPLE DATA and PROJECTS


Differences between Tableau 9.3 and Tableau 10.3 ( 9.x vs 10.x versions )


Differences between Tableau 8.3 and Tableau 9.2( 8.x vs 9.x versions)


Discuss Difference between 'Data Blending' and 'Data Joining'


Explain Tableau Architecture


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POWERBI FOR BEGINNERS, INTERVIEW QUESTIONS and ANSWERS, INSTALLATION AND DOWNLOADS, SAMPLE DATA and PROJECTS

Explain Power BI Data Refresh Architecture


Configuring automatic refresh in Power BI


Differences between visual level, page level and report level filters


What is Difference between Power BI Desktop and Power BI


Building Blocks in Power BI (or) Components of Power BI.


Click here for POWERBI HOME PAGE

PYTHON FOR BEGINNERS, INTERVIEW QUESTIONS and ANSWERS, INSTALLATION AND DOWNLOADS, SAMPLE DATA and PROJECTS

What are the differences between Python 2.x vs Python 3.x (2.7 vs 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9), when to you which version ?


Python for Beginners


How to install Python ?


Boolean Expressions and Comparison Operators in Python


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