What is the size of the output resultset after running the statement below? Select lessons.id, lessons.name, lecturers.name, surname lecturers, lessons where lecturers.id%=lessons.lecturer_id lecturers (4x5) id (Primary Key, Auto Increment) surname birth_date birth_place name 1 John Adams 27-02-1950 Canada Mary Stone Stein Jacobs NewYork Canada Londra 20-02-1980 Tom 27-09-1960 4 Mare 02-02-1965 lessons (4x5) id (Primary Key) 1 lecturer_id credits semester name Calculus1 Calculus2 1 4. 1 1 4 | Physics Introduction to Programming 2 4 5 4 O 4x4 О 4x5 О Зx4

What is the size of the output resultset after running the statement below? Select lessons.id, lessons.name, lecturers.name, surname lecturers, lessons where lecturers.id%=lessons.lecturer_id lecturers (4x5) id (Primary Key, Auto Increment) surname birth_date birth_place name 1 John Adams 27-02-1950 Canada Mary Stone Stein Jacobs NewYork Canada Londra 20-02-1980 Tom 27-09-1960 4 Mare 02-02-1965 lessons (4x5) id (Primary Key) 1 lecturer_id credits semester name Calculus1 Calculus2 1 4. 1 1 4 | Physics Introduction to Programming 2 4 5 4 O 4x4 О 4x5 О Зx4

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Task 22: KimTay Pet Supplies is considering discounting the price of all items by 10 percent. List the item ID, description, price, and discounted price for all items. Use DISCOUNTED_PRICE as the name for the computed column.
Question 6 To get all the variables named x1 through x15 (out of 30 variables that start with x) from data, you could use O filter(data starts with("x")) select(flights."x") Oselect(data.num_range("x"1:15) Opick(flights.starts with("x")) Question 7 To reverse sort the nycflights13::flights data set by month and then by day, you would use O sort values(flights.day.month.descending-TRUE) O filter(flights.desc(month).desc(day)) O filter(flights.desc(day).desc(month)) Osort values(flights,month.day.ascending FALSE) Question 8 To get all the variables from the flights like "arr_delay" and "dep_delay", you could use O filter(flights,ends_with("_delay")) O select(flights.""_delay") O select(flights,ends_with("_delay")) Opick(flights,ends_with("_delay"))
Shop (ShopCode, ShopName, ShopSales) Which of the following queries displays name of the shop that has the highest average shop sales. Select one: a.SELECT shopName FROM shop GROUP BY shopName HAVING max(avg(shopSales)) b.SELECT shopName FROM shop WHERE avg(shopSales) GROUP BY shopName; c.SELECT shopName FROM shop WHERE avg(shopSales) = (SELECT max(avg(shopSales)) FROM shop GROUP BY shopName); d.SELECT shopName FROM shop GROUP BY shopName HAVING avg(shopSales) = (SELECT max(avg(shopSales)) FROM shop GROUP BY shopName);
Stal >>> Run PS6_P2_solution.py Vehicle: Make: Tesla Model: Model 3 Year: 2022 Age: 1 years Vehicle: Make: Ford Model: F-150 Year: 2020 Max Load: 10000 lbs Age: 3 years Can the truck carry 11000 lbs? No >>>
[SELECT productName, listPrice FROM products WHERE listPrice < 500 ORDER BY listPrice ASC].what will be the output? * productID categorylD productCode productName listPrice 1 1 strat Fender Stratocaster 699.00 1 les paul 1 sg 12 Gibson Les Paul 1199.00 Gibson SG 2517.00 1 fg700s Yamaha FG700S 489.99 1 washburn Washbun D10S 299.00 1 rodriguez Rodriguez Caballero 11 415.00 2 precision 2 hofner Fender Precision 799.99 Hofner Icon 499.99 3 ludwig Ludwig 5-piece Drum Set with Cymbals 699.99 Tama 5-Piece Drum Set with Cymbals 799.99 10 3 tama Your answer pick the form element from the following text box radio button. submit button. All of these
Create a view to show the total number of staff for each city with more than 1 staff. The output column header should be city, number_of_staff, sorted by the total number of staff from high to low.
The InstantRide Driver Relationship team wants to learn how many travels each driver has done in the month of October. You need to send them the DRIVER_ID, and two calculated columns: DAY and RIDES. The DAY column is calculated using the DAY() function with the TRAVEL_START_TIME as the argument. The RIDES column is calculated by using the COUNT() function to determine the number of rides given for each day. Filter the results with the MONTH function.
Is it more challenging to design GUIs using pixel-based coordinates?
Create a tibble conttaiiscount_customer=1ning driver names of instance where free_wine=1,discount_customer=1 and the order contained more than 4 pizzas.(There can be repeated names). Assign the tibble to Q1 Create a Variable named ratio that is the ratio of bill to pizza , called ratio.What is the mean of that value (call the value mean_ratio) ?Assign this to Q2 For each day of the week , what is the variance in pizzas? Assign this to Q3
USE supermarkett; CREATE TABLE product(product_id INT NOT NULL,product_name VARCHAR(45) NOT NULL,price FLOAT NOT NULL,prod_discount INT NOT NULL,product_type VARCHAR(45) NOT NULL,PRIMARY KEY (product_id)); CREATE TABLE stock (stock_id INT NOT NULL,product_id INT NOT NULL,quantity INT NOT NULL,product_status BOOLEAN NOT NULL,PRIMARY KEY (stock_id),FOREIGN KEY (product_id) REFERENCES product(product_id));CREATE TABLE employee (emp_id INT NOT NULL,emp_name VARCHAR(45) NOT NULL,emp_number INT NOT NULL,address VARCHAR(45) NOT NULL,PRIMARY KEY (emp_id));CREATE TABLE supplier (sup_id INT NOT NULL,sup_name VARCHAR(45) NOT NULL,sup_number INT NOT NULL,address VARCHAR(45) NOT NULL,PRIMARY KEY (sup_id));CREATE TABLE login (login_id INT NOT NULL,password VARCHAR(45) NOT NULL,PRIMARY KEY (login_id)); ALTER TABLE stockADD FOREIGN KEY (product_id) REFERENCES product(product_id); ------------------------------------------------------------------------------- make 2 different -stored procedure- query…
The following Excel image has a VBA program (see below). What will be the result after the program is executed? Any cells not displayed are currently empty, and any cells with numbers are formatted numeric. A B C D 1 2 3 UN Gross Domestic Product (GDP) per Capita 4 5 6 7 8 9 10 11 12 Total Year/Country Angola Portugal France 2000 2005 2010 2015 2020 10 10 10 10 10 50 100 100 100 100 100 500 1,000 1,000 1,000 1,000 1,000 5,000 E Mexico 10,000 10,000 10,000 10,000 10,000 50,000
USing sakila SELECT last_name, first_name, ROUND(AVG(length), 0) AS averageFROM actorINNER JOIN film_actor ON film_actor.actor_id = actor.actor_idINNER JOIN film ON film_actor.film_id = film.film_idWHERE title = "ALONE TRIP"GROUP BY last_name, first_nameORDER BY average;Highlight the SELECT query.In the main menu, select Query > Explain Current Statement.In the Display Info box, highlighted in red below, select Data Read per Join. The execution plan depicts the result of EXPLAIN for the SELECT query. The execution plan has seven steps, corresponding to the red numbers on the screenshot: Access a single film row using the idx_title index on the title column. Access matching film_actor rows using the idx_fk_film_id index on the film_id foreign key. Join the results using the nested loop algorithm. Access actor rows via the index on the primary key. Join actor rows with the prior join result using the nested loop algorithm. Store the result in a temporary table and compute the…