SQL Basic Knowledge

SQL (Structured Query Language) is a standard language used for managing and manipulating relational databases. Basic SQL knowledge includes understanding the following:
Data Definition Language (DDL): Commands like CREATE, ALTER, and DROP to define or modify database structures.
Data Manipulation Language (DML): Commands like SELECT, INSERT, UPDATE, and DELETE to retrieve and modify data.
Data Querying: Using SELECT statements with WHERE clauses, JOIN operations, and aggregate functions (like COUNT, SUM, AVG) to query and analyze data.
Constraints: Ensuring data integrity with PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL.
Indexes: Creating and using indexes to improve query performance.
Transactions: Using BEGIN, COMMIT, and ROLLBACK to manage database transactions safely.
This foundation allows users to interact efficiently with databases for storing, retrieving, and modifying data.
What you learn from this video:
SQL Datatypes
SQL Operators
SQL Expressions
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