Module Artifacts · 7 items
Outlines the sequence of topics covered in the module — from ER diagram notation and relational schema basics, through mapping strong entities and attributes to tables, to handling one-to-many relationships — serving as a syllabus-style roadmap for learners and instructors to understand the module's scope and progression.
This reading introduces Entity-Relationship (ER) diagrams and relational schemas as conceptual tools used before database construction begins, and learners read it to understand the foundational vocabulary and purpose of both artifacts before proceeding through the module.
This reading explains how to convert strong entities and their attributes from an ER diagram into concrete relational tables with defined columns and primary keys, and learners use it to practice the most fundamental step of the ER-to-schema translation process.
This reading covers how one-to-many relationships identified in an ER diagram are represented in a relational schema by placing a foreign key in the child table, and learners use it to understand the rules and decisions involved in implementing this common relationship pattern.
This reading explains how many-to-many relationships between entities are handled by introducing a junction (associative) table that holds foreign keys referencing both related entities, and learners use it to understand how to correctly decompose and represent this relationship type in a relational schema.
This reading describes what weak entities are, how they differ from strong entities, and how their dependency on a parent entity is captured in a relational schema through composite primary keys and foreign key constraints, guiding learners through this special-case mapping.
This reading covers the post-translation process of checking a derived relational schema for errors such as missing tables, misnamed columns, and incorrect foreign keys, and learners or instructors use it to understand systematic techniques for validating and refining a schema before implementation.
This reading covers the post-translation process of checking a derived relational schema for errors such as missing tables, misnamed columns, and incorrect foreign keys, and learners or instructors use it to understand systematic techniques for validating and refining a schema before implementation.