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Difference Between Specialization and Aggregation in DBMS

Database Management Systems (DBMS) /

In database management systems (DBMS), specialization and aggregation are crucial concepts used to define relationships and hierarchies. These terms are part of the Entity-Relationship (ER) model, which helps design databases by representing real-world entities and their interactions. While both serve to structure data efficiently, specialization and aggregation differ in their approaches and applications. This article […]

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Essential Terminology of Relational Model Explained

Database Management Systems (DBMS) /

The terminology of relational model in Database Management Systems (DBMS) defines the fundamental concepts and components that make relational databases efficient and structured. Understanding these terms is essential for database design, querying, and management, as they form the backbone of relational databases widely used today. This article explores the critical terms, their meanings, and examples

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Non-Aggregate Subqueries in SQL for Advanced Data Filtering

SQL /

When working with SQL, subqueries are powerful tools for complex data retrieval. While many subqueries involve aggregate functions, non-aggregate subqueries are equally valuable. In this post, we will explore the use of non-aggregate subqueries in SQL, specifically how to filter data based on specific criteria without using aggregate functions. What Are Non-Aggregate Subqueries in SQL?

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