Oracle
1Z0-071 · Question #39
Examine the business rule: Each student can take up multiple projects and each project can have multiple students. You need to design an Entity Relationship Model (ERD) for optimal data storage and…
The correct answer is D. PROJECT_ID must be the primary key in the projects entity and foreign key in the STUDENTS E. An associative table must be created with a composite key of STUDENT_ID andPROJECT_ID. See the full explanation below for the reasoning.
Question
Examine the business rule:
Each student can take up multiple projects and each project can have multiple students. You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK Which two statements are true in this scenario?
Options
- AThe ERD must have a1:M relationship between the students and projects entitles.
- BThe ERD must have a M:M relationship between the students and projects entities that must be
- CSTUDENT_ID must be the primary key in the STUDENTS entity and foreign key in the projects
- DPROJECT_ID must be the primary key in the projects entity and foreign key in the STUDENTS
- EAn associative table must be created with a composite key of STUDENT_ID andPROJECT_ID;
How the community answered
(38 responses)- A16% (6)
- B8% (3)
- C5% (2)
- D71% (27)
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