Question
ER to Relational Mapping a) i) Reverse engineer the following schema to make an ER Diagram A (a), B (a, b), C (a, b, c)
ER to Relational Mapping
a) i)
Reverse engineer the following schema to make an ER Diagram
A (a), B (a, b), C (a, b, c) B.a references A.a; C.ab references B.ab
ii)
EMP (ssn, ename, supervisor, Dno), DEP (Dno, dname) EMP.Dno references DEP.Dno; EMP.supervisor references EMP.ssn
b) Map the following ER diagram into a relational schema.
Attribute(s) that form the primary key should be underlined (do not underline other candidate keys). Do not show the schema in progress after each step. Only give the final relational schema. Use the same names of attributes as in the ER. List all foreign keys in your mapped schema using the dot notation: Table1.Attribute1 references Table2.Attribute2
Phone is a weak attribute.but just didnt show in here.
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started