SQL (Structure Query Language) is a computer language that we use to interact with a relational database. A Relational Database is a type of database that stores and provides access to data points that are related to one another. A relational database can be considered for any information need in which data points related to each other and must be managed in a secure, ruled-based, consistent way. In short, SQL is used where database is used.

Database is a computer program that stores a large amount of data. Databases are everywhere in technology. The SQL definition is a language to define database objects and manipulate the data. Using SQL, you can create and manage database. Some of the examples of databases are MySQL, Oracle, PostgreSQL, Microsoft SQL Server, MongoDB etc.

Many IT professionals like data analysts, database administrators, SQL developers and data scientists often require using this coding language. Having knowledge and expertise in SQL is important for these roles. You use SQL to communicate with a database. Using different commands, SQL tells the database what to do.

In standard English, a Query means a request for information. In computer language, it refers to same thing, expect the information is retrieved from database. SQL allows to handle the information using tables and shows a language to query these tables and other objects related (views, functions, procedures, etc.). You can use the SQL query to update, search, retrieve, add and delete data.

Knowledge of SQL can bolster your CV and help you get a job in the IT industry. As most IT jobs require knowledge of SQL, employers prefer candidates with excellent knowledge of databases. Furthermore, if you are well-versed in SQL and some other programming language like Python, Java or C, you can have more opportunities in IT industries.

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Vasudha Lonkar
SEED Infotech Ltd., Pune