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Convert the following ER diagrams to Relational Schema (express the schema in a format as shown in Figure 13.13 example given in the Book Chapter - Database Fundamentals) – Note, you can rename attributes when there are name conflicts (i.e., whenever you find that in a table there are attributes that have the same name, you must change their names so that each attribute has a distinct name in the table). Q1. A Q2. E E R B Q3. For this conversion, you are not allowed to create a separate table for relationship 'S': D A E R E

Convert the following ER diagrams to Relational Schema (express the schema in a format as shown in Figure 13.13 example given in the Book Chapter - Database Fundamentals) – Note, you can rename attributes when there are name conflicts (i.e., whenever you find that in a table there are attributes that have the same name, you must change their names so that each attribute has a distinct name in the table). Q1. A Q2. E E R B Q3. For this conversion, you are not allowed to create a separate table for relationship 'S': D A E R E

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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**Homework #1** **Instructions:** Read the Introduction, ER, Crow’s Feet, Relational Model Lecture Notes and study Database Fundamentals (Book Chapter) Figure 13.12 → Figure 13.13 example (ignore the normalization process for now). All materials are posted on the Course Content page on Blackboard. **Assignment:** Convert the following ER diagrams to Relational Schema (express the schema in a format as shown in Figure 13.13 example given in the Book Chapter – Database Fundamentals) – Note, you can rename attributes when there are name conflicts (i.e., whenever you find that in a table there are attributes that have the same name, you must change their names so that each attribute has a distinct name in the table). **Diagrams:** **Q1. ER Diagram:** - Entities: A, B - Relationship: E (between A and B) **Q2. ER Diagram:** - Entities: A, B, C - Relationship: E (between A and B), R (between A and C) **Q3. ER Diagram:** (Special instructions: You are not allowed to create a separate table for relationship ‘S’) - Entities: A, B, C, D, E, F - Relationships: E (between A and B), R (between A and C), S (between A and D) **Q4.** Figure 3 in Lecture Note: ER Model --- **Graph/Diagram Explanation:** - **Q1:** The diagram consists of two entities, A and B, connected by a relationship labeled E. Both A and B are represented as ovals with E as a rectangular shape in between, indicating a simple connection. - **Q2:** This diagram includes three entities: A, B, and C. Entity A is connected to B through relationship E, shown by a rectangle. A diamond labeled R indicates a relationship between A and C, depicting a more complex ER structure involving multiple entity relationships. - **Q3:** Contains a boxed diagram with several entities and relationships. Entity A has multiple relationships: E with B, R with C, and S with D. Entity D connects to attributes F and E. The boxed area indicates specific rules where relationship 'S' should not be converted into a separate table. These diagrams require conversion into relational schema, ensuring each attribute name within the table remains unique to avoid conflicts.
Transcribed Image Text:**Homework #1** **Instructions:** Read the Introduction, ER, Crow’s Feet, Relational Model Lecture Notes and study Database Fundamentals (Book Chapter) Figure 13.12 → Figure 13.13 example (ignore the normalization process for now). All materials are posted on the Course Content page on Blackboard. **Assignment:** Convert the following ER diagrams to Relational Schema (express the schema in a format as shown in Figure 13.13 example given in the Book Chapter – Database Fundamentals) – Note, you can rename attributes when there are name conflicts (i.e., whenever you find that in a table there are attributes that have the same name, you must change their names so that each attribute has a distinct name in the table). **Diagrams:** **Q1. ER Diagram:** - Entities: A, B - Relationship: E (between A and B) **Q2. ER Diagram:** - Entities: A, B, C - Relationship: E (between A and B), R (between A and C) **Q3. ER Diagram:** (Special instructions: You are not allowed to create a separate table for relationship ‘S’) - Entities: A, B, C, D, E, F - Relationships: E (between A and B), R (between A and C), S (between A and D) **Q4.** Figure 3 in Lecture Note: ER Model --- **Graph/Diagram Explanation:** - **Q1:** The diagram consists of two entities, A and B, connected by a relationship labeled E. Both A and B are represented as ovals with E as a rectangular shape in between, indicating a simple connection. - **Q2:** This diagram includes three entities: A, B, and C. Entity A is connected to B through relationship E, shown by a rectangle. A diamond labeled R indicates a relationship between A and C, depicting a more complex ER structure involving multiple entity relationships. - **Q3:** Contains a boxed diagram with several entities and relationships. Entity A has multiple relationships: E with B, R with C, and S with D. Entity D connects to attributes F and E. The boxed area indicates specific rules where relationship 'S' should not be converted into a separate table. These diagrams require conversion into relational schema, ensuring each attribute name within the table remains unique to avoid conflicts.
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