Attribute: Attribute is a property of an entity. It describes each entity in a database and the name of the column in a table is representing an attribute. Fields in a database table are also referred to as attributes of a database object. Subtype: Subtype is one type of entity which inherits the attributes from other entity. The subtype relationship is a grouping of entities type in single entity that shares the common attributes or relationships which are different from other grouping. It is related to an entity supertype, where the supertype entity has common characteristics and the subtype entity has the unique characteristics of each entity subtype.

Question

• Solve the problem (pls refer to the inserted image)

Answer 1

Question

Chapter 5, Problem 7RQ

Program Plan Intro

Attribute:

Attribute is a property of an entity. It describes each entity in a database and the name of the column in a table is representing an attribute.

Fields in a database table are also referred to as attributes of a database object.

Subtype:

Subtype is one type of entity which inherits the attributes from other entity.

The subtype relationship is a grouping of entities type in single entity that shares the common attributes or relationships which are different from other grouping.

It is related to an entity supertype, where the supertype entity has common characteristics and the subtype entity has the unique characteristics of each entity subtype.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Students have asked these similar questions

• Solve the problem (pls refer to the inserted image)

Write .php file that saves car booking and displays feedback. There are 2 buttons, which are <Book it> <Select a date>. <Select a date> button gets an input from the user, start date and an end date. Book it button can be pressed only if the start date and ending date are chosen by the user. If successful, it books cars for specific dates, with bookings saved. Booking should be in the .json file which contains all the bookings, and have the following information: Start Date. End Date. User Email. Car ID. If the car is already booked for the selected period, a failure message should be displayed, along with a button to return to the homepage. In the booking.json file, if the Car ID and start date and end date matches, it fails Use AJAX: Save bookings and display feedback without page refresh, using a custom modal (not alert).

Write .php file with the html that saves car booking and displays feedback. Booking should be in the .json file which contains all the bookings, and have the following information: Start Date. End Date. User Email. Car ID. There are 2 buttons, which are <Book it> <Select a date> Book it button can be pressed only if the start date and ending date are chosen by the user. If successful, book cars for specific dates, with bookings saved. If the car is already booked for the selected period, a failure message should be displayed, along with a button to return to the homepage. Use AJAX: Save bookings and display feedback without page refresh, using a custom modal (not alert). And then add an additional feature that only free dates are selectable (e.g., calendar view).