ER Schema | AL ICT 2025 Exam Question-09-a-ii

In this video, we break down AL ICT 2025 Question 09 – ER Schema in a clear, structured, and exam-focused way. If you are preparing for the Advanced Level ICT examination, this lesson is essential because ER Schema questions are consistently tested and carry significant marks. We start by revising the core concepts of an Entity Relationship (ER) Model, including entities, attributes, primary keys, and relationships. Understanding these basics is critical before moving into schema conversion. Many students lose marks not because they don’t know the theory, but because they fail to correctly transform an ER diagram into a relational schema. This video directly targets that weakness. Step by step, we explain how to convert entities into tables, how to handle different types of relationships (one-to-one, one-to-many, and many-to-many), and how to correctly assign primary and foreign keys. Special attention is given to common exam traps such as weak entities, composite attributes, and multivalued attributes. These are areas where students typically make mistakes, and we address them with simple explanations and practical examples. We also analyze the structure of Question 09 from the 2025 paper and show you how to approach it under exam conditions. Time management, answer presentation, and avoiding unnecessary complexity are all covered. By the end of this video, you will not only understand ER Schema but also gain the confidence to answer similar questions accurately and efficiently. This lesson is designed especially for Sri Lankan A/L ICT students following the Tamil medium, but it is useful for anyone studying database design fundamentals. Whether you are revising before the exam or trying to strengthen your database concepts, this video will guide you in the right direction. If you find this explanation helpful, make sure to like, share, and subscribe to the channel for more ICT lessons, past paper discussions, and exam-focused tutorials. #ALICT2025 #ERSchema #Database #ICTExam #ALICT #ERDiagram #DatabaseDesign #ICTSriLanka #ExamPreparation #ICTLessons