16/07/2026
π How Well Do You Know Relational Databases? π€
Yesterday at SkillRover Technologies, our Data Analysis students took another exciting step into SQL by learning how data is connected across multiple tables.
We covered:
π Relationships in Databases
ποΈ Primary Keys & Foreign Keys
π Table Joins
β
INNER JOIN
Students discovered that real-world databases donβt store everything in one table. Instead, information is organized into related tables that work together.
Imagine a school database:
π One table stores student information.
π Another stores courses.
π Another stores results.
Using Foreign Keys and INNER JOIN, we can connect these tables and retrieve meaningful information with a single SQL query.
π Mini Takeaway:
The true power of SQL isnβt just storing dataβitβs connecting data to answer real business questions.
At SkillRover Technologies, we teach SQL the way itβs used in companies: through practical examples and real-world scenarios.
π Sida Plaza, 26 Ovie Palace Road, Effurun, Delta State
π WhatsApp: 09071790126
π Registration for our July 2026 Cohort is ongoing!
Join our 100% physical, hands-on Data Analysis program and master:
π Excel β ποΈ SQL β π Power BI