Question: Consider the following relations: Emp(E_id: integer, E_name: string, Age: integer, Salary: real) Works(E_id: integer, Dep_id: integer, affectation: date) Dept(Dep_id: integer, Dep_name: string, budget: real, Manager_id:

Consider the following relations:

Emp(E_id: integer, E_name: string, Age: integer, Salary: real) Works(E_id: integer, Dep_id: integer, affectation: date) Dept(Dep_id: integer, Dep_name: string, budget: real, Manager_id: integer)

a) What referential integrity constraints exist between these relations?

b) What are the options for enforcing these constraints when a user attempts to delete a Dept tuple?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

SQL question Consider the following relational schema. Emp(eid integer, ename: string, age: integer, salary: real) Works (eid: integer, did: integer, pet-time: integer) Dept (did: integer, dname:...

Question 1 (5 points). Answer each of the following questions briefly. The questions are based on the following relational schema: Emp( eid: integer, ename: string, age: integer, salary: real) Works(...

Question 1 (5 points). Answer each of the following questions briefly. The questions are based on the following relational schema: Empl eid: integer, ename: string, age: integer, salary: real) Works(...

2 . Consider the following relational schema. Emp ( eid: integer, ename: string, age: integer, salary: real ) Works ( eid: integer, did: integer, pct _ time: integer ) Dept ( did: integer, dname:...

Answer each of the following questions briefly. The questions are based on the following relational schema: Emp (eid: integer, ename: string, age: integer, salary: real) Works (eid: integer, did:...

Answer each of the following questions briefly. The questions are based on the following relational schema: Emp(eid: integer, ename: string, age: integer, salary: real) Works(eid: integer, did:...

1) Given an ER diagram (as shown below), write SQL statements to create the corresponding relations and capture as many of the constraints as possible. If you cannot capture some constraints, explain...

Given the following standard hours of planned and actual inputs and outputs at a work centre, determine the WIP for each period. The beginning WIP is 12 hours of work. eri 3 24 20 Planned 24 25 Pln...

What does the acronym DBLC mean, and what does a DBLC portray?

Question 2 8 In Excel, what is the intersection of a column and row called? Vertical field Cell Text box Insertion point

Stock A is currently sold at $34.25 per share. Stock A will pay a dividend of $1.5 per share in the coming year. Dividends are expected to grow by 25 percent for years 2 and 3 and 10 percent...

1. What are your creative strengths?

What metaphors might describe how we work together?

7. I understand that victims of my outbursts will remember my accusatory statements and name-calling long after I have calmed down.