Author Archives: Hariharan Rajendran

ByHariharan Rajendran

Purpose of Columnstore Index in SQL Server 2012

Nowadays, data being generated and captured across many devices, applications and services. Now every organization is tasked with storing massive amounts of data to accelerate their business growth success.

Using traditional tools to capture and process the data is very challenging and it is not going to be one time activity because all data users want to see continuous growth.

We have below issues while doing this task.

  1. The Volume of data is high, so the ability of data warehouses to execute the queries within a time is not achievable.
  2. More time is required to Tune the queries.
  3. Designing and maintaining multiple indexes.

In many cases, so much of time elapsed between the time the query start executed and time to render the result.

To overcome the above issues, Microsoft SQL Server team worked on columnstore Index, which allow very large data set to be read quickly.

The performance of the columnstore index is far better than normal index. This has been introduced in Microsoft SQL Server 2012.

ByHariharan Rajendran

Microsoft Visualization Tools

There are many visualization tools available from different companies.

Microsoft always concentrates more on visualization tools because visual tools are going to play a major role in the future.

What is the use of visualization tools?

visualization tools to visualize and analyze the data in an easy way. In this digitized environment, we are producing data from different kinds of machines and gadgets which are not easy to process and understand. To understand those data, we need to process first and once we get proper format, then using visualization tools, we can able to understand.

Microsoft innovations are always awesome since those are very easy to learn and use. The most famous tool from Microsoft is office tools, in that Microsoft excel is the best which can be used from very basic users to advanced users.

In excel, Microsoft added a few more options in terms of visualization. Those options are,

  1. Power Query
  2. Power View
  3. Power Map
  4. Power BI

 

ByHariharan Rajendran

Data Visualization in Microsoft Excel

Data is the most valuable asset in almost all the places.

Understanding the data is not easy for a layman. Visualization tools are playing a vital role to make the layman to understand about the data. Most of business decisions based on best data visualization.

This article speaks about simple visuals based on data about cancer statistics.

Just collected a few facts about the estimated number of new cancer cases in US 2015.

Ref: http://www.cancer.org/acs/groups/content/@editorial/documents/document/acspc-044552.pdf

DataVisual1

 

Visualization tools always helping us to see the facts very clearly. I just converted the data to graphs by using simple and effective Microsoft Excel.

Estimated New Cases for Both Male and Female:

DataVisual2

Estimated New cases for Male Vs Female:

DataVisual3

This is just to help you understand the facts about cancer diseases.

Learning Steps:

  1. Get the data from above reference link, copy and paste the data in Microsoft Excel sheet (it can be any version).
  2. Select the columns and rows and click the “Format as Table” ( Option available in Home tab & Styles section)
  3. If you want to see the chart for sites with Male, just hide the both sexes and Female columns by clicking right click on column B and D.
  4. Select the data from cell A1 to C16
  5. Go to insert tab which is next to Home on top and click the pie chart on chart section.
  6. Pie chart appeared for selected data. Try to check with other chart formats.

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