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Data Warehousing Concepts in SQL: Understanding Star and Snowflake Schemas

Table of Contents Introduction What Is a Data Warehouse? OLTP vs OLAP: The Need for Warehousing Key Components of a Data Warehouse What Is Dimensional Modeling? Facts and Dimensions Explained The...
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SQL with APIs and JSON Fields in PostgreSQL: Working with Semi-Structured Data

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SQL for Data Engineering: ETL Concepts and Building Scalable Data Pipelines

Table of Contents Introduction What Is Data Engineering and Why SQL Matters Understanding ETL (Extract, Transform, Load) SQL’s Role in Each ETL Stage Data Sources: Raw Data Ingestion with...
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SQL for Data Analysis: Deep Dive into KPIs and Cohort Analysis

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Error Handling in SQL: Managing Exceptions and Ensuring Reliable Transactions

Table of Contents Introduction Why Error Handling Matters in SQL Types of Errors in SQL Syntax Errors vs Runtime Errors Understanding Transaction Errors Rollbacks for Safe Error Recovery Error Handling in...

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Stored Procedures and Functions in SQL: Encapsulating Logic for Reuse and Automation

Table of Contents Introduction What Are Stored Procedures and Functions? Benefits of Using Stored Routines Stored Procedures vs Functions: Key Differences Syntax for Creating Stored Procedures Executing a Stored Procedure Parameters...

Triggers in SQL: Automating Database Behavior

Table of Contents Introduction What Is a Trigger in SQL? Why Use Triggers? Types of Triggers Syntax of a Trigger BEFORE vs AFTER Triggers INSERT, UPDATE, and DELETE Triggers Trigger Events: Row-Level...

Using Constraints in SQL: NOT NULL, UNIQUE, CHECK, and DEFAULT

Table of Contents Introduction What Are Constraints in SQL? Why Use Constraints? NOT NULL Constraint UNIQUE Constraint CHECK Constraint DEFAULT Constraint Combining Multiple Constraints Adding Constraints to Existing Tables Dropping Constraints Naming Constraints for Clarity Column-Level...

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Real-world Applications of Data Science

Kumar Prafull -
We often hear the phrase “data is the new oil,” but what truly gives data its value is the ability to turn it into...

What is Data Science?

Kumar Prafull -
In an increasingly digital world, data is being generated at an unprecedented rate. From your morning coffee purchase to your late-night scroll through social...

Datafication – All you need to know!

Pratiksha -
In today's digital age, data has become the lifeblood of organizations across industries. The process of datafication, which involves the collection, analysis, and transformation...

The Advancements and Threats of AI: Analyzing the Benefits and Risks of ChatGPT and GPT-4

Kumar Prafull -
Artificial Intelligence (AI) has become increasingly popular in recent years, with new technologies such as ChatGPT and GPT-4 revolutionizing the field. These language models...

History of Robots

Syskool -
Robots have come a long way since Unimate, the first industrial robot invented by George Charles Devol.  Since then industrial robots have been defined by the International Organization...

INDIA’S PROGRESS IN SCIENCE & TECHNOLOGY

Syskool -
INDIA’S PROGRESS IN SCIENCE & TECHNOLOGY Indus Valley Civilisation: India’s progress in science and technology is not a new phenomenon. As early as 2.500 B.C.,...

Science & Technology in India

Syskool -
The new scheme of Civil Services Main Examination - 2013 has Science and Technology theme in General Studies, Paper — III. In view of...

Technologically Advanced Countries in the World

Syskool -
Technology is the application of scientific knowledge for practical purposes, especially in industry. Many nations worldwide have used technology to enhance the quality of...

Milestones in Space Exploration

Syskool -
Milestones in Space Exploration Date Mission Achievements Country/ Organization Mission Name 1931 First German military liquid-fuelled rocket engines developed Germany Walter Riedel 10 May 1946 First space research flight (cosmic radiation experiments) United States captured and...

Use Your Pen Drive as Your System RAM

Syskool -
1) First Insert the Pen Drive at least having a memory of 1GB ,( Preferably 4GB) in the Given USB port of the Computer. 2)...

Computer Devices & their Inventors

Syskool -
Computer Devices & their Inventors=>Key board— Herman Hollerith first keypunch devices in 1930’s=>Transistor— John Bardeen, Walter Brattain & Wiliam Shockley ( 1947-48)=>Integrated Circuit— Jack...

Some Important Portals & their Founders

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Some Important Portals & their Founders  1. Google— Larry Page & Sergey Brin2. Facebook— Mark Zuckerberg3. Yahoo— David Filo & Jerry Yang4. Twitter— Jack Dorsey...
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