Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- Scenario and Database Model: InstantRide InstantRide is the new ride sharing application in the city and it has just started its operations. With the help of the InstantRide mobile application, the users request a ride with their location. Drivers and cars are assigned to the request; and then the driver picks up the user to ride their requested location. Information for the users, drivers and cars are stored in the database as well as the travel transactions. In the USERS table, information for the users are stored with their first name, last name and email: In the DRIVERS table, all the drivers in the InstantRide are stored with their name, driving license number and check and rating information: In the CARS table, all the cars in the InstantRide system are kept with the license plate, model and year: Finally, the transactions of the rides are stored in the TRAVELS table. For each travel, start and end time with location are stored. In addition, the involved driver, car and…arrow_forwardAssignment Create a database in Access. In the database include the following tables: • Student info which has the following fields o First Name o Last Name o StudentID (primary key) • Courses table which includes the following fields: o CourselD (primary key) o Course Name o CRN • Schedule which contains the following fields: o StudentID o CourselD Create the proper relationships between the tables. Fill the tables with at least 5 students and 2 different classes. You can generate the data randomly by using the Mockaroo site Or you can review Extra Material for more links on how to generate random data Create a report to print out the course and the names of the students taking that course (so group by course). Make sure the report is well formatted, looks professional, include a professional header and a footer.arrow_forwardTask 5: The Developers team also wants you to ensure that emails are converted to lowercase after an update operation. Currently, new insertions are guaranteed to have lowercase emails, but there is no such guarantee for legacy emails. Therefore, the team wants to ensure that emails are being retained in a lowercase irrespective of any changes in the database. Create a new TRIGGER called email_update for the USERS table that runs before an UPDATE operation. Task: Create a TRIGGER to run on the USERS table before any UPDATE operation. (SQL Database Test): Create a TRIGGER before any UPDATE operations on the USERS tablearrow_forward
- Create a new user account with readWrite permission for your database using MongoDBarrow_forwardThe Developers team also wants you to ensure that emails are converted to lowercase after an update operation. Currently, new insertions are guaranteed to have lowercase emails, but there is no such guarantee for legacy emails. Therefore, the team wants to ensure that emails are being retained in a lowercase irrespective of any changes in the database. Create a new TRIGGER called email_update for the USERS table that runs before an UPDATE operation. Task Create a TRIGGER to run on the USERS table before any UPDATE operation.arrow_forwardQuestion number 6arrow_forward
- import sqlite3 from sqlite3 import Error # Creates connection to sqlite in-memory database def create_connection(): """ Create a connection to in-memory database :return: Connection object """ try: conn = sqlite3.connect(":memory:") return conn except Error as e: print(e) # YOUR CODE HERE # Use sqlite3.connect(":memory:") to create connection object return conn # query to create the table table_sql = """ CREATE TABLE Horses ( id integer PRIMARY KEY NOT NULL, name text, breed text, height real, birthday text ); """ # query to insert data into the table ins_sql = """INSERT INTO Horses VALUES(1,'Babe','Quarter Horse',15.3,'2015-02-10'); """ # query to fetch all data from the table fetch_sql = """SELECT * FROM Horses;""" # creating db connection conn = create_connection() # fetching a cursor from the connection c = conn.cursor() # executing statement to create table c.execute(table_sql) # executing statement to…arrow_forwardHow can you create a form that shows the columns of only a single row of a database in an application?arrow_forwardScenario and Database Model: InstantRide InstantRide is the new ride sharing application in the city and it has just started its operations. With the help of the InstantRide mobile application, the users request a ride with their location. Drivers and cars are assigned to the request; and then the driver picks up the user to ride their requested location. Information for the users, drivers and cars are stored in the database as well as the travel transactions. In the USERS table, information for the users are stored with their first name, last name and email: In the DRIVERS table, all the drivers in the InstantRide are stored with their name, driving license number and check and rating information: In the CARS table, all the cars in the InstantRide system are kept with the license plate, model and year: Finally, the transactions of the rides are stored in the TRAVELS table. For each travel, start and end time with location are stored. In addition, the involved driver, car and…arrow_forward
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