You added a new class (eg. Course) to your project and you want to persist itscontent to the database le.g. save courses information in a database table). What arethe steps that you should do?B I...

Answered: You added a new class (eg. Course) to…

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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You have been hired as a Database Developer and you have been given the option to use a trigger and a procedure. Discuss what triggers are and when it would be best to use them?
List the name of each employee. If the employee has a supervisor, then also list the name of the supervisor. Show the names of employees and supervisors by respectively renaming the attributes to Employee_Name and Supervisor_Name. Retrieve the names and salaries of all employees who do not work on a project with a name called 'ProductX'.
As a Database Engineer, you've been given the freedom to choose between using triggers and procedures. What are triggers, and when would it be a good idea to use them?
How do you manage cascading actions in database triggers, and what precautions should be taken?
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. I need help with task 4 and task 5.
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What happens if you fail to identify an attribute but add it later after the database has been built?
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You must first create a transaction in the database to get started. We're going to concentrate on the positive features of the business in the subsequent chat.
What are control chart for attributes? Where can you used them?
What additional questions need to be answered before you can decide if the database as a service approach is right for your library?

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You added a new class (eg. Course) to your project and you want to persist its content to the database leg save courses information in a database table). What are the steps that you should do?