Day 4 | DBMS Relationships & Foreign Key in Hindi | Cardinality | Relationship | BPSC TRE 4.0 CS скачать в хорошем качестве

Day 4 | DBMS Relationships & Foreign Key in Hindi | Cardinality | Relationship | BPSC TRE 4.0 CS

Welcome to Day 4 of the DBMS Full Course in Hindi. In this lecture, we cover Foreign Key, Referential Integrity and all types of Relationships, which are very high-weightage topics in computer teacher and competitive exams. This session is extremely important for: BPSC TRE STET / CTET KVS DSSSB UGC NET (DBMS Basics) Computer Science Students 📚 Topics Covered in Day 4: 🔹 Foreign Key / Reference Key Definition of Foreign Key Difference between Primary Key & Foreign Key NULL & Not-Unique values in Foreign Key Referenced Table (Parent) & Referencing Table (Child) 🔹 Referential Integrity & Constraints Insert, Delete & Update problems ON DELETE: SET NULL CASCADE NO ACTION ON UPDATE: SET NULL CASCADE NO ACTION 🔹 Types of Relationships (ER Model) One-to-One Relationship One-to-Many Relationship Many-to-One Relationship Many-to-Many Relationship Junction / Bridge Table concept Composite Key in Many-to-Many 🔹 Mapping Cardinality Degree of relationship Table formation rules Exam-oriented examples with tables 🎯 Why This Lecture is Important? Relationships & Foreign Key are frequently asked in MCQs Important for ER-Diagram based questions Helps in database design understanding Explained in simple Hindi with tables & diagrams 🔔 Subscribe करें और Bell Icon ON रखें ताकि DBMS की पूरी series miss न हो। @KAUTILYATECHNICALCLASSES @prerna_sinhaa @TARGETABHITeachingExam @TGTPGTAdda247 ​