employee (personname, street, city) works (person_nате, соmpany_лате, salary) соmpany (companyлате, сіtvy) Figure 2.17 Employee database.

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

A: A primary key is a column that exists in a table or is created by the database in a specific order.…

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

A: a. Modify the database so that the employee whose ID is '12345' now lives in “Newtown”. Answer:…

Q: Write the following queries in relational algebra, using the university schema.a. Find the ID and…

A: Answer:   a.) Find the ID and name of each instructor in the Physics department.   πID, name…

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

A: Relational Database: A rational database is a collection of tables and the tables are connected by a…

Q: Consider the employee database of Figure 2.17. Give an expression in the relational algebra to…

A: ONLY THREE PARTS ARE SOLVED. KINDLY SEND OTHER PARTS ON THE PORTAL AGAIN TO GET THE ANSWER.

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: 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: Consider the employee database. Give an expression in the relational algebra to express each of the…

A: The operations of relational algebra are given below- Select Operation (σ) Notation − σp(r)…

Q: Write the following queries in relational algebra Customer (sid, name, career) Commodity(cid, title)…

A: In relational algebra σ is used to select operation σname="Networks"Books will return the tuples of…

Q: Given the following Theatre Database form:    No.of seats:500                          Owner:…

A: Normalization of data is method which is used to organize the data in the database and it applies a…

Q: For the following relation schema : employee(employee-name, street, city) works(employee-name,…

A: SQL expression to find the names of all employees in database who do not work for 'First Bank…

Q: Use the following relational schemas for answering the queries in relational algebra; STUDENT(ID,…

A: select Student_IDfrom ENROLLMENTwhere Course_ID in (select Course_ID from ENROLLMENTINTERSECTselect…

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: Part 2: Use the following relations to answer question 4. RO R1 a b b 2 3 4 7 1 2 2 1 2 1 2 3 1 2 4.…

A: a) is join  b) Projection give attributes and union give without duplicates .

Q: Consider the following expressions, which use the result of a relational algebra operation as the…

A:

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 3.19. Give an expression in SQL foreach of the following…

A: Consider some sample values of works table:

Q: Consider the following Account table and express in Relational Algebra each of the questions below:…

A: a)  SELECT * FROM Account WHERE accountType = 'Saving' ;   b)  SELECT amount FROM Account WHERE…

Q: Given the database schema R(A, B, C), and a relation r on the schema R, write an SQL query to test…

A: Functional dependency An attribute C does have a functional dependency on valid instances of…

Q: a. List the details of all the accounts of type ‘Saving’. ( . . . . . . . . . . . . . . ) b. Find…

A:

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

A: We need to write a query to find the total number of dependents of each employee who has dependents.…

Q: Use the following relational schemas for answering the queries in relational algebra; STUDENT(ID,…

A: Query for the given conditions: SELECT ID , Phone FROM STUDENT WHERE name LIKE '%Kumar%' Here Its…

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 following database and its schema and write relational algebra expression to retrieve:…

A: The relational algebra expression to retrieve the ids of suppliers who supply red chains and their…

Q: a) consider the employee database . What are the appropriate primary keys? b) Consider the employee…

A: a) The appropriate primary key is written in bold and underlined: employee(person_name, street,…

Q: Consider the employee database of Figure 2.17. Give an expression in the relational algebra to…

A: Note: There are multiple questions are given in one question. According to the rule, you will get…

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: Consider the employee database of Figure 2.17. Give an expression in the relational algebra to…

A: Relational algebra The relational algebra in a database comprises a set of operations that accepts…

Q: Consider the library database of Figure 3.20.Write the following queries in SQL.a. Find the member…

A: a) Find the member number and name of each member who has borrowedat least one book published by…

Q: Find the name of employees who have salary less than the average salary of employees who are in…

A: Firstly, calculate the average salary of employees who are working in Department 4 and then use this…

Q: Consider the bank database of Figure 15.14, where the primary keys are underlined, and the following…

A: Justification: The below expression performs theta join on the smallest amount of data possible. It…

Q: Question#2: Given the following Theatre Database form:    No.of seats:500…

A: The answer is

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 employee database of Figure 2.17. Give an expression in the relational algebra to…

A: The operations of relational algebra are given below– Select Operation (σ) Notation − σp(r)…

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

A: Query: Give all managers of “First Bank Corporation” a 10-percent raise. SQL expression: UPDATE…

Q: Consider the following expressions, which use the result of a relational algebra operation as the…

A: ANSWER:-

Q: Using the relational database given in lab work no. 2, write the following queries in SQL: 1) Which…

A: Structured Query Language(SQL) A very-high-level language, in which the programmer is able to avoid…

Q: Consider the bank database of Figure 2.18. Give an expression in the relational algebra for each of…

A: a. Find each loan number with a loan amount greater than $10000   Ploan_number  ( δamount > 10000…

Q: Consider the following expressions, which use the result of a relational algebra operation as the…

A:

Q: Consider the following database and its schema and write relational algebra expression to retrieve:…

A: Doing with MySQL query

Q: Consider the following Account table and express in Relational Algebra each of the questions below:…

A: here have to determine Relational Algebra each of the questions.

Q: m university database , Write the following queries in SQL Find the titles of courses in the Comp.…

A: For the first question , we are assuming that there exist another table named as  Table (or relation…

Q: Consider the Library database given below. Write the following queries in SQL, assuming that the…

A: IF (OBJECT_ID('tempdb..#member') IS NOT NULL) DROP TABLE #member CREATE TABLE #member…

Q: Consider the bank database.                                                        branch(branch…

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

Q: Write the following queries in relational algebra, using the university schema .Find the ID and name…

A: Relational algebra in database It is known as procedural query language which performs its…

Q: Consider the following database and its schema and write relational algebra expression to retrieve:…

A: The query for the mentioned problem is given below. The branch name of account and branch name of…

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 employee database of Figure 2.17. Give an expression in the relational algebra to…

A: a. The name of each employee who lives in the city “Miami”: Πname (σ city = "Miami"(employee))

Q: Consider the following database and its schema and write relational algebra expression to retrieve:…

A: We need to write relational algebra expression which will display name of branch located in Abha i.e…

Q: What is the result of first performing the Cartesian product of student and advisor, and then…

A: RELATIONAL ALGEBRA: Relational algebra is basically a query language which takes the input as the…