Exercise 6.1.3: Write the following queries in SQL. They refer to the database schema of Exercise 2.4.1: Product (maker, model, type) PC (model, speed, ram, hd, price) Laptop (model, speed, ram, hd, screen, price) Printer (model, color, type, price) Show the result of your queries using the data from Exercise 2.4.1. a) Find the model number, speed, and hard-disk size for all PC's whose price is under $1000. b) Do the same as (a), but rename the speed column gigahertz and the hd column gigabytes. c) Find the manufacturers of printers. d) Find the model number, memory size, and screen size for laptops costing more than $1500.

Refer to the film and inventory tables of the Sakila database. The tables in this lab have the same columns and data types but fewer rows. Write a query that lists the titles of films with the fewest rows in the inventory table. This query requires a subquery that computes the minimum of counts by film_id: SELECT MIN(count_film_id) FROM ( SELECT COUNT(film_id) AS count_film_id FROM inventory GROUP BY film_id ) AS temp_table; This subquery is provided in the template.

INFO 2303  Database Programming Assignment  : PL/SQL Practice   Note: PL/SQL can be executed in SQL*Plus or SQL Developer or Oracle Live SQL.   Write an anonymous PL/SQL block that will delete all patients for doctors that works in the Family Practice Verify that patients have been deleted accordingly. Then do a select * from patients where doc_id = (select doc_id from doctor where area = ‘Family Practice’. You should get no rows.

Write a PL/SQL Programming block to do below actions 2.Before you work on Quesiton 2 , please create a table because you will be inserting numbers in thisMessages tableCREATE TABLE messages( RESULTS NUMBER)Run below query to see if there is any data :SELECT * FROM MESSAGES

SQL ( ORACLE SQL DEVELOPER ) :  THIS IS FIRST , SECOND AND THIRD TABLE for the Task 1 to solve  :    create table author_45( auth_name char(50), gender char(1), age number(3), nationality char(50), PRIMARY KEY (auth_name) );     create table book_45( isbn number(10), title char(50), ver_no number(2), publisher char(50), PRIMARY KEY (isbn) );     create table writtenBy_45( isbn number(10), auth_name char(50), yr_published number(4), price number(3), no_copy number(4), PRIMARY KEY (isbn,auth_name), foreign key (isbn) references book_45, foreign key (auth_name) references author_45 );     insert into author_45 values ('Benoit','F',42,'French'); insert into author_ 45 values ('Antonini','M',33,'Italian'); insert into author_ 45 values ('McAven','F',31,'Australian'); insert into author_ 45 values ('Williams','M',90,'British');     insert into book_45 values (101,'atabases',1,'Possum'); insert into book_45 values (202,'SQL Primer',2,'Hall'); insert into book_45 values…

You have the following tables:   MANAGERS (MANAGER_ID, LAST_NAME, FIRST_NAME, DEPARTMENT) ACCOUNTS (ACCOUNT_NUMBER, MANAGER_ID, CUST_ID, BALANCE) CUSTOMERS (CUST_ID, LAST_NAME, FIRST_NAME)   Write a SQL statement that lists account number, balance, MANAGER’s last name,  CUSTOMER ID, and CUSTOMER’s last name for every account in the ACCOUNTS table.

Express the following SQL code in Relational Algebra form.SELECT *FROM COURSEWHERE (COURSE.COLLEGE <> ’Business’OR COURSE.COLLEGE <> ’Engineering’)AND COURSE.CREDIT = ’U’;

WorksOn Database: Employee (EmployeeNumber, EmployeeName, BirthDate, Title, Salary, DepartmentNumber) Project (ProjectNumber, ProjectName, Budget, DepartmentNumber) Department (DepartmentNumber, DepartmentName, ManagerNumber) WorksOn (EmployeeNumber, ProjectNumber, Responsibility, Hours) Questions: 1) Write an SQL query that returns the project number and name for projects with a budget no greater than $1,050,000. 2) Write an SQL query that returns all works on records where hours worked is less than 5 and the responsibility is 'Manager'. 3) Write an SQL query that returns the employees (number and name only) who have a title of 'EE' or 'SA' and make more than $50,000. 4) Write an SQL query that returns the employees (name and salary only) in department 'D1' ordered by decreasing salary. 5) Write an SQL query that returns the departments (all fields) ordered by descending department name.

Schema: Frequents(kid, store)  Sells(store, candy)  Likes(kid, candy) d) Use SQL to list the names of all the candies that are liked by at least one kid, along with the names of the stores that sell them. Sort the result in alphabetical order by candy name.

Assistance with SQL statements   Previous code; CREATE TABLE Lab4program_piershed (  code VARCHAR(5) PRIMARY KEY,  name VARCHAR(20),  tel VARCHAR(20));CREATE TABLE Lab4course_xxxx (  cid INT PRIMARY KEY,  name VARCHAR(20),  credits INT,  mycode VARCHAR(5),  FOREIGN KEY (mycode) REFERENCES Lab4program_xxxx(code)); 1. Insert 3 records into your Lab4program_xxxx table. The code should be "CPS", "TECH", "MATH", or "BIO". Please copy/paste your SQL statements with the output message in the text that shows you successfully insert 3 records to your table. 2. Insert 4 records into your Lab4course_xxxx table with at least 2 different mycode. Please copy/paste your SQL statements with the output message in the text that shows you successfully insert 4 records to your table.