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Feb 3rd 2020 at 3:47 AM

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e have heard a lot about data science technology. Along with this, those people who are interested in grabbing knowledge about data science technology must have heard that there are many skills that a data scientist should have. The most important one is SQL. Before getting yourself ready for the SQL, you should know what SQL is, why it is important in the data science technology and why companies demand SQL skill for data scientist.


SQL stands for the standard query language. Generally, the SQL language is used in all the relational databases. SQL language is used to manipulate the data which is stored in the database. Moreover, the SQL is the standard for all relational databases which are using SQL as their key API. SQL is a non-procedural language. The commands of the SQL will tell what is performed, but they will not tell how to do. There are two types of query languages which are procedural and non-procedural. SQL is one of the non-procedural query languages.


We know that data science technology is the process of extracting and processing data. Obviously, we need to have the data in the first hand for extracting and processing. Where do we get this data from? We get the data from different sources which include sequential files, weblogs, relational databases, etc. A relational database is a section where SQL comes into light. If we want to extract data which is stored in the relational databases, then we need SQL. Most of the companies store their data on the NoSQL or SQL database. Many database platforms became available after the standard query language. The SQL became a standard for all such platforms and many database systems.

Platforms like Spark, Hadoop, etc. are using SQL for maintaining and structuring their data in the relational database systems. Along with this, Apache Drill and Impala provide an interactive capability for the queries. On the other hand, Hadoop provides many amazing features for batch SQL.

Moreover, Apache Spark uses in-memory system for accelerating the processing of the queries. Spark is a platform for storing and processing the data which is launched by the Apache foundation. Spark is said to be more useful as compared to the Hadoop since it is launched to overcome the shortcomings of the Hadoop. Apart from this, the in-memory system indicates that Spark retrieves the data from the hard drive and load it into the buffer memory. Then, the Spark access the data from the buffer memory instead of the hard drive where it considerably reduces the time for accessing the data.

Here are the points which tell why a data scientist should have a command on the SQL.

  • A data scientist should know SQL for handling the structured data. We know very well that the structured data is stored in relational databases.

  • Big platforms such as Hadoop, Spark, etc. are being used for data science technology. These platforms work on the SQL so that a data scientist should know SQL for working on such platforms.

  • SQL works as a standard tool.

Those students who are interested in grabbing knowledge in data science technology can go for a course on data science in Hyderabad.



For Info Please contact:


Address: 2-56/2/19, 6th floor, Vijaya towers near Meridian school, Ayyappa Society Rd, Madhapur, Hyderabad, Telangana 500081


Phno: 9989994319


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