by HintsToday Team | Apr 7, 2024 | SQL
For Appearance( So Few Jawans & Workers Go Home On Late) SELECT – FROM – JOIN – ON – WHERE – GROUP BY – HAVING – ORDER BY – LIMIT FROM – JOIN – ON – WHERE – GROUP BY – HAVING – SELECT – ORDER...
by HintsToday Team | Apr 7, 2024 | SQL
SQL provides various functions to perform operations on data stored in a database. Here are some commonly used SQL functions categorized based on their functionality: Aggregate Functions: COUNT(): Counts the number of rows. SUM(): Calculates the sum of values. AVG():...
by HintsToday Team | Apr 7, 2024 | SQL
Data Definition Language (DDL) – to define and modify the structure of a database. Data Manipulation Language (DML) – to access, manipulate, and modify data in a database. Data Control Language (DCL) – to control user access to the data in the database...
by HintsToday Team | Apr 7, 2024 | SQL
Normalization and denormalization are two opposing database design techniques aimed at achieving different goals. Let’s explore each concept: Normalization: Normalization is the process of organizing the data in a database to minimize redundancy and dependency....
by HintsToday Team | Apr 7, 2024 | SQL
Designing a well-structured and efficient database schema in SQL involves several steps and considerations. Here’s a comprehensive guide to help you design a database schema that meets your application requirements while ensuring efficiency, scalability, and...