A car-rental company maintains a database for all vehicles in its current fleet. For all vehicles, it includes the vehicle identification number, license number, manufacturer, model, date of purchase, and color. Special data are included for certain types of vehicles:• Trucks: cargo capacity.• Sports cars: horsepower, renter age requirement.• Vans: number of passengers.• Off-road vehicles: ground clearance, drivetrain (four- or two-wheel drive). Construct an SQL schema definition for this database. Use inheritance where appropriate.

A car-rental company maintains a database for all vehicles in its current fleet. For all vehicles, it includes the vehicle identification number, license number, manufacturer, model, date of purchase, and color. Special data are included for certain types of vehicles:• Trucks: cargo capacity.• Sports cars: horsepower, renter age requirement.• Vans: number of passengers.• Off-road vehicles: ground clearance, drivetrain (four- or two-wheel drive). Construct an SQL schema definition for this database. Use inheritance where appropriate.

A Guide to SQL

9th Edition

ISBN:9781111527273

Author:Philip J. Pratt

Publisher:Philip J. Pratt

Chapter2: Database Design Fundamentals

Section: Chapter Questions

Problem 11RQ

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Imagine a database of students where the StudentID is the main key, and there are other indexes on Major, Age, MaritalStatus, and HomeZipCode (all secondary keys). Let's assume the institution wanted a list of MIS or computer science majors who were over 25 and married and were from the 45462 postcode code OR computer engineering majors who were single and were from the 45462 zip code. In any case, they wanted the list to come from the 45462 zip code. How can indexes be used to guarantee that individuals will only have access to the info that fulfills this prerequisite?
A student database may include indexes on fields such as major, age, marital status, and home zip code in addition to the main key, which is the student's unique identifier (all secondary keys). Let's assume the school wants a list of MIS or CS majors over the age of 25 who are married and from the 45462 zip code OR a list of CS majors under the age of 25 who are single and from the 45462 the code. Is there a way to utilize indexes to restrict access to just the records that meet this criterion?
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Your task is to develop a database, in order to keep information on all sales at a motorcycle dealership. The database will include information on motorcycles, salespeople, sales, and customers. We assume for simplicity that the dealership sells only new motorcycles and that all motorcycles are produced by the same manufacturer. Each kind of motorcycle is called a model, and it has a unique model number. For each model, you want to store also its name, engine size in cubic centimeters (cc) which is an integer number, and the date when this particular model was introduced. For each salesperson, you want to store their employee ID number, first name, middle initial, last name, and the date when the employee was hired. For each customer, you want to store a customer ID number, first name, middle initial, last name, address information (city, state, and zipcode), phone number (given in standard US format), and e‐mail address. Assume that you do not have a zip code table available. Each…
Consider a MOVIE database in which data is recorded about the movie industry. The data requirements are summarized as follows: -- Each movie is identified by title and year of release. Each movie has a length in minutes and a rating (e.g., G, PG, or R). Each has a production company, and each is classified under one or more genres(such as horror, action, drama, and so forth). Each movie has one or more directors and one or more actors appear in it. Each movie also has a plot outline. Finally, each movie has zero or more quotable quotes, each of which is spoken by a particular actor appearing in the movie. An actor may have multiple quotes from one movie. -- Actors are identified by name and date of birth and appear in one or more movies. Each actor has a role in the movie, i.e., the character he or she plays. -- Directors are also identified by name and date of birth and direct one or more movies. -- Production companies are identified by name and each has an address. A production…
Please draw an ERD for this mini case. At NCU, students take classes (sections). Each section is a course and there can be many sections for a course. You can find courses without sections offered. An enrollment is a file where the university records the grade for a student in a particular section. Each section is taught by a professor but a professor can teach many sections. She/he may not teach any section.
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The problems for this chapter use a database for a simple department store that sells items to customers and wants to keep track of the invoices, the selling price (if an item is on sale), and the sales tax (7%) to be collected on some items. Every customer and invoice are assigned unique numbers. All items have a Universal Product Code (UPC) number and bar-code assigned to each unique item. Food and non-carbonated beverages are not taxed, but clothing, home goods, and most other items are. The structure of the tables is described in the following crows foot ERD:
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Consider a MAIL_ORDER database in which employees take orders for parts from customers. The data requirements are summarized as follows: o The mail order company has employees, each identified by a unique employee number, first and last name, and Zip Code. o Each customer of the company is identified by a unique customer num, first and last name, and Zip Code. o Each part is identified by a unique part number, a part name, price, and quantity. o Each order placed by a customer is taken by an employee and is given a unique order number. Each order contains specified quantities of one or more parts. Each order has a date of receipt as well as an expected ship date. The actual ship date is also recorded. Design an Entity-Relationship diagram for the above environment. Please indicate Cardinality Constraints and Participation Constraints
Consider a MAIL_ORDER database in which employees take orders for parts from customers. The data requirements are summarized as follows: o The mail order company has employees, each identified by a unique employee number, first and last name, and Zip Code. o Each customer of the company is identified by a unique customer num, first and last name, and Zip Code. o Each part is identified by a unique part number, a part name, price, and quantity. o Each order placed by a customer is taken by an employee and is given a unique order number. Each order contains specified quantities of one or more parts. Each order has a date of receipt as well as an expected ship date. The actual ship date is also recorded. Design an Entity-Relationship diagram for the above environment.