By : Satyajit Pattnaik
Master SQL within few hours!!...
4.3 196
1:20:57 hrs 19 lectures All Level
By : Dave Merton
Get up to speed quickly on SQL queries and start earning more money!...
4.1 5168
4:32:20 hrs 76 lectures Beginner Level
By : Sekhar Metla (Microsoft Certified Professional) Sudha
Build Your Data Analytics Career With Real World Data Science Exercises - by Microsof...
4.3 68046
8:48:30 hrs 59 lectures Beginner Level
By : Sekhar Metla (Microsoft Certified Professional) Sudha
Learn SQL like a Professional!, Start from the scratch and reach all the way! by Micr...
4.3 84582
5:58:42 hrs 57 lectures Beginner Level
By : Vardges Zardaryan
Learn SQL from scratch for extracting, manipulating, and analysing data using MySQL d...
4.6 56958
1:50:39 hrs 26 lectures All Level
By : Sanesh Kale
Latest version of Microsoft SQL Server 2019 - Easy course designed for everyone who w...
4.1 47579
2:35:25 hrs 23 lectures All Level
By : Arunprakash P V
SQL Query commands and Programming...
4.1 90312
5:36:50 hrs 12 lectures Intermedite Level
By : Vikas Munjal
Step By Step Practical Training on Programming Transact SQL Query from basics on Micr...
4.2 70901
7:3:29 hrs 46 lectures Beginner Level
By : Rashid Khan
An absolute beginner’s tutorial to quickly learn Microsoft SQL Server from scr...
4.8 8412
3:47:42 hrs 44 lectures Beginner Level
By : Jazeb Akram
Learn SQL and Database Core Concepts: This SQL Tutorial will cover all Major SQL conc...
4.5 27592
2:11:45 hrs 24 lectures Beginner Level
Learn more topics in various categories at one place. Explore unlimited courses in other categories and up-skill yourself today.
SQL, or Structured Query Language, is a domain-specific language used for managing and manipulating relational databases. It is employed for tasks such as querying data, defining and modifying database structures, and controlling access to the stored data.
SQL supports several fundamental operations, including SELECT (retrieve data), INSERT (add new data), UPDATE (modify existing data), DELETE (remove data), and CREATE/ALTER/DROP (manage database structure).
SQL is a language, while MySQL is a relational database management system (RDBMS) that uses SQL. MySQL is one of many database systems that implement the SQL language. Other examples include PostgreSQL, SQLite, and Microsoft SQL Server.
A primary key in SQL is a unique identifier for a record in a table. It ensures each row has a distinct identity, and it is often used to establish relationships between tables. The primary key constraint enforces the uniqueness and non-null properties of the key.
Normalization is the process of organizing data in a database to reduce redundancy and dependency. It involves dividing large tables into smaller, more manageable tables and defining relationships between them. Normalization helps maintain data integrity and avoids data anomalies.