In this SQL tutorial you will learn SQL to get a clear idea of what Structured Query Language is and how you deploy SQL to work with a relational database system. So a structured query language is a language that is used to operate the relational databases. Some of the major ways in which SQL is used in conjunction with a relational database is for the purposes of storing, retrieving and manipulating of data stored in a relational database.
This SQL tutorial can be beneficial to anybody who wants to learn SQL. Software developers, database administrators, architects, managers can take this SQL tutorial as a first step to learn SQL and excel in their careers.
Learn SQL in 16 hrs from experts
There are no prerequisites to learn SQL from this SQL tutorial. If you have a basic understanding computer languages and databases, then it is beneficial.
To learn SQL, first let us compare SQL with NoSQL in the below table:
|Type of database||Relational||Non-relational|
|How is data stored||Structured data in tables||Unstructured data in JSON files|
|Suitability for OLTP systems||Excellent||Average|
|Database compliance||ACID properties||CAP Theorem|
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The language to communicate with the relational database is the SQL or Structured Query Language. SQL helps to operate the relational databases and derive information from it. Some of the operations that the SQL does include creation of database, fetching, modifying, updating and deleting the rows along with storing, manipulating and retrieving data within the relational database. SQL is an ANSI standard language but there are a lot of versions of SQL in usage as well.
Structured Query Language or SQL is used so extensively for the following reasons.
Here in this section of the SQL tutorial we list some of the top features of SQL that make it so ubiquitous when it comes to managing relational databases.
Here in this section of the SQL tutorial we will learn SQL applications that make it so important in a data-driven world where managing huge databases is the norm of the day.
Today regardless of the relational databases systems by major corporations like Oracle, IBM, Microsoft and others, the one thing that is common to them is the Structured Query Language or SQL. So if you learn SQL then you will be able to pursue a very broad career spanning a lot of roles of responsibilities. Also if you learn SQL then it is important for a data science career as well since a data scientist will also have to deal with relational databases and query it using the standard language SQL.