perators discussed in this chapter. Also show the result of each query as it would apply to the database state of Figure 3.6.  - List the managers who are controlling more than 2 projects. - List the names of employees all of whose dependents were born before 1990. - Retrieve the average salary of employees who work totally no less than 30 hours on projects

Q: 4) How many instructors are advising more than three students? 5) Which department has the highest…

A: Here, we have to fetch result based on id present in advisors table   select i.* from instructors i…

Q: Subject : Database Management System Question: b. Explain natural join with example.

A: Natural Join: The SQL NATURAL JOIN is a type of EQUI JOIN and in natural join two tables structure…

Q: The following relational schema forms part of an Employees database. The primary keys are underlined…

A: Note: As per the policy I answered as much as I can. Please resubmit the question separately which…

Q: Convert the following ER diagram into a relational database schema, be certain to indicate primary…

A: Conversion of above ER diagram to relationship schema is in step 2.

Q: Question # 1: Consider the relational database of Figure 1. Write SQL Queries for each of below…

A: Relational Database: A relational database is a collection of tables of which the tables are related…

Q: Specify the following queries on the database schema shown in Figure attached using queries in SQL…

A: Question 1: In order to solve the above query, we need to join two tables named PROJECT and…

Q: Question 22. Consider the following table in a relational database. Last Name Rank Room Shift Smith…

A: Candidate Key: It is defined as the set of attributes that will mainly help us to identify the…

Q: Consider the relational database of Figure 3.19, where the primary keys areunderlined. Give an…

A: Creating the table – create table company(company_name text, city text);   Inserting the data –…

Q: Consider the employee database of Figure 3.19, where the primary keys areunderlined. Give an…

A: ID and name of each employee who earns more than the average salary of all employees of her or his…

Q: Question#4 Answer below question, considering the relational database as represented in the…

A: Attaching the query:- Explanation:- In this we have to find all those customers with bank account…

Q: h query in this relational database (represented by relational diagram) will provide you with the…

A: Query for list of 3 transported products by shipper DHL in January 2020

Q: We have the following database schema:   Computer (vendor, model, machinetype) Model (num,…

A: Objective: Given three database relations Computer, Model, and Vendor. We need to obtain the phone…

Q: Find the last name of the supervisors who do not have dependents.

A: SELECT LNAMEFROM EMPLOYEEWHERE NOT EXISTS (SELECT *FROM DEPENDENTWHERE SSN = ESSN);

Q: Consider the relational database of Figure 3.19, where the primary keys areunderlined. Give an…

A: Creating the table – CREATE TABLE works(ID number, works_name text, salary number);   Inserting the…

Q: Consider the insurance database of Figure 3.17, where the primary keys areunderlined. Construct the…

A: Structured Query Language (SQL) to update the damage amount for the car with license plate…

Q: Specify

A: Here are the SQL queries as asked:   1. List the department managers who are controlling more than 2…

Q: Consider the employee database of Figure 4.12. Give an SQL DDL definition of this database. Identify…

A: Solution: SQL DLL definition of employee database:                           With the help of…

Q: BOOK Book_id Title Publisher_name BOOK AUTHORS Book_id Author_name PUBLISHER Name Address Phone…

A: Objective: The relations for the library database are provided specifying the key attributes, i.e.…

Q: Consider the employee database of Figure 3.19, where the primary keys areunderlined. Give an…

A: There is an example of an Employee database is given. According to the question, we need to find out…

Q: Consider the following relational scheme: X1 A1 A2 X2 АЗ А4 A5 The attributes that are part of the…

A:

Q: Write the following queries in SQL on the relational database schema for COMPANY database given in…

A: As per company rules we are only supposed to answer first question in case of multiple questions.…

Q: Given the relation below named Student_Registration , answer the following questions. S_id S_Name…

A: 1.What is the relational schema of the relation Student_Registration? Student_Registration(S_id…

Q: The following exercises are based on the BITS database user views as designed in Your Turn 6-1 in…

A:

Q: Consider the employee database of Figure 3.19. Give an expression in SQL foreach of the following…

A: Inserting some record values in the works table, after insertion the works table will apear as given…

Q: Question 22. Consider the following table in a relational database. Last Name Rank Room Shift…

A: solution:

Q: Given the following relational schema (primary keys are underlined, optional attributes are…

A: b. Given relational schema: TRAINER (SSN,NameT, Surname, City) GYM (CodG, NameG, Address, City)…

Q: Consider the relational database of Figure 3.19, where the primary keys areunderlined. Give an…

A: select e.ID, e.person_name, e.city from employee e, works w where e.ID = w.ID and company_name =…

Q: Consider the insurance database of Figure 3.17, where the primary keys areunderlined. Construct the…

A: In a relational database, a primary key, also identified as main keywords, is a key that is unique…

Q: Consider the bank database of Figure 16.9, where the primary keys are underlined. Construct the…

A: Following is the nested query  that retrieves the branch name with B and the account number with…

Q: For developing our queries, we will be using the following relational schema: Student(SID, name,…

A: Q1.  Here we need to join relation Course and Offering and use selection operator to select only…

Q: List three common scenarios in which relations should be denormalized prior to database…

A: Introduction: A normalised database typically involves combining several tables to get queries;…

Q: QUESTION1 Consider the following databases and their schemas and write relational algebra expression…

A:

Q: Show the result of the following queries as it would apply to the database state given above. 1.…

A: I cannot see any database here, Please repost the question with the database.

Q: Schema: a Student ID | Name | Major Major is a FK to Dept in Course e Course Dept Num Title P Dept…

A: a. Relational calculus 1. What are the abbreviations for department and course titles numbered…

Q: Given the relation below named Student_Registration , answer the following questions. S_id…

A: Relational Schema: A relational schema in a database gives a outline of how data is organized in a…

Q: The following relational schema forms part of an Employees database. The primary keys are underlined…

A: Actually, database is a used to stores the data\information.

Q: The following relational schema forms part of an Employees database. The primary keys are underlined…

A: Question. The following relational schema forms part of an Employees database. The primary keys are…

Q: Consider the two relations with their schemas as listed below: Employee(name, suriR birtbRats…

A: The FOREIGN KEY CONSTRAINT IN SQL is used to ensure the referential integrity of the data in one…

Q: Consider the relational database of Figure 3.19. Give an expression in SQL foreach of the following:…

A: We use the 'update' query to modify the database. We use the 'set' query to set the city to…

Q: Consider the follow relations’ schemas to answer the following questions:  Student (sid, name,…

A: Student 1000 blocks Book 5000 blocks BorrowedBook 15,000 blocks  -->Record size R in…

Q: Consider the relational database of Figure 3.19, where the primary keys areunderlined. Give an…

A: SQL – DB Creation and insertion queries create table employee(ID varchar(10) primary key ,…

Q: Exercise 3.13 Consider the university database from Exercise 2.3 and the ER dia- gram you designed.…

A:

Q: Consider the employee database of Figure 4.12. Give an SQL DDL definitionof this database. Identify…

A: Given:- Consider the employee database of Figure 4.12. Give an SQL DDL definitionof this database.…

Q: Consider the relational database of Figure 3.19, where the primary keys areunderlined. Give an…

A: Inserting some record values in the works table, after the insertion the works table will appear as…

Q: The following relational schema forms part of an Employees database. The primary keys are underlined…

A: NOTE: As per our company guidelines we are supposed to answer only the first three sub-parts. Kindly…

Q: Consider the relational database of Figure 3.19, where the primary keys are underlined. Give an…

A: Query: The structured language query to find the ID, name, and city of residence of each employee…

Q: Consider the relational database of Figure 3.19, where the primary keys areunderlined. Give an…

A: The Structured Language Query (SQL) to find the ID, name, and city of residence of each employee who…

Q: 4) List all candidate keys of the books relation. 5) List all of the candidate keys of the…

A: In case of multiple questions, we are only needed to answer first question. Саndidаte  Key  –  is  а…

Q: Consider the General Hardware Corp. relational database and the data stored in it, as shown in…

A: a) select *from CUSTOMEREMPLOYEE where CustomerNumber=2198;