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What is SQL?

Relational databases are managed and worked on using the programming language SQL or also called Structured Query Language. It is the preferred language for many other data management platforms, including NoSQL databases, as well as relational database management systems (RDBMS) like MySQL, Oracle, and Microsoft SQL Server.

Business, finance, healthcare, and government are just a few of the fields and applications where SQL is used. It is utilized for reporting, analytics, business intelligence, and data warehousing. It is also employed in the creation of websites, data management, and data visualization.

How long does it take to learn?

Any programming language’s learning curve depends on 2 factors - prior experience and time dedicated. SQL syntax is relatively easy to learn, for a beginner it could take about 4-6 weeks to perfect their base in SQL and an advanced programmer could take anywhere between 2-4 weeks. It's crucial to keep in mind that learning SQL is an ongoing process and that to become an expert, you will need to keep practising and picking up new knowledge over time.

Where is SQL used?

Application areas and industries where SQL is employed include:

• Business: To efficiently store, retrieve, and analyze data, enterprises utilize SQL in data warehousing, business intelligence, analytics, and reporting.
• Finance: To manage and analyze vast volumes of financial data, SQL is used by financial institutions including banks, insurance companies, and investment businesses.
• Healthcare: To handle and analyze patient data, medical records, and other sensitive information, healthcare organizations employ SQL.
• E-commerce: To manage customer data, inventory, and order details, SQL is utilized in e-commerce applications.
• Data Science: To extract, filter, and clean data from databases for additional analysis, data science uses SQL.
• Gaming applications: It is used in calculating high scores, player statistics, and virtual economies, SQL is used to store and retrieve data.
• Social media: In social media platforms, SQL is used to store and retrieve user data, post, and comment data, friend lists, and personal data
• Website development: it’s used to store and retrieve data such as user information, product catalogs, and order data.

Key Topics to Learn

When studying SQL, it's crucial to understand the following subjects:

1. Data Types: Understanding the various SQL data types, including integers, dates, and texts, is crucial when creating and modifying data.
2. SELECT statement: The most used SQL command for retrieving data from a database is the SELECT statement. It is crucial to comprehend how to apply this assertion, including how to sort and filter data.
3. CREATE, ALTER, DROP: Allowing you to build, update, and drop database objects, such as tables and views, is crucial when working with a database.
4. JOIN: In a relational database, JOINs are used to integrate data from many tables. It's crucial to comprehend the many JOIN types, including inner join, left join, and right join, as well as when to employ them.
5. INDEXES: When working with huge databases, it's crucial to comprehend how indexes function as well as how to design and utilize them to enhance query performance.
   stored procedures and triggers: they are pre-written blocks of code that can be run in reaction to particular events.
6. Transactions: When working with a database, it's crucial to understand the notion of transactions and how to use them to maintain the consistency and integrity of the data.
7. Normalization and optimization: They are approaches used to enhance the performance and scalability of a database

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At FavTutor you get 1:1 live tutoring sessions with experts from the industry. This allows you to learn SQL according to your learning capabilities from anywhere across the world. Live tutoring allows you to instantly clarify any doubts and solidify your knowledge of a subject. A concrete base in SQL is essential to becoming an expert coder.