Learn SQL articles

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL constraints are rules that are used to limit the type of data that can be stored in a table. Constraints provide a way to enforce the integrity of a database, ensuring that the data in a table adheres to a […]

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL transactions are critical components of databases that bring about multiple database operations into a single unit of work. They ensure data consistency and recovery by committing the changes to the database only if all the operations within the transaction block

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL, short for Structured Query Language, is a language used in programming and designed for managing data held in a Relational Database Management System (RDBMS), or for processing stream in a Relational Data Stream Management System (RDSMS). It is particularly useful

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL joins are used to combine rows from two or more tables, based on a related column between them. Let’s break down four main types of SQL joins: INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN. 1. INNER JOIN: The

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Welcome to the world of SQL programming! Today, we will dive into understanding a pivotal concept in SQL, known as the ‘Foreign Key’. If you are stepping into the database field, this is an essential concept you need to familiarize yourself

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Structured Query Language (SQL) is a popular relational database management system (RDBMS) language used for managing and manipulating databases. One important aspect of SQL databases is the concept of a primary key. This is a unique identifier for a record in

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Using databases in any software application, it’s essential to understand the principles which guarantee the safety of your data. Among these principles, we find the ACID properties. ACID stands for Atomicity, Consistency, Isolation, and Durability. These guarantee that the database transactions

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Welcome to this beginner’s guide for using the UNION operator in SQL! UNION is a very useful SQL operand that lets you combine the result sets of two or more SQL queries. What is UNION? UNION is a SQL command that

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> In the vast universe of data management, ensuring data uniqueness is a critical aspect. Similar to real life where we differentiate things based on their unique qualities, the same rule applies in the context of data. In SQL, we can achieve

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Stored procedures in SQL are pre-compiled and reusable groups of SQL statements that are named and stored in a database. They offer various advantages such as improving performance by reducing the amount of information sent to a server, preventing SQL injection