You are designing a database for an e-commerce business that sells athletic shoes online. Your business purchases shoes wholesale from major manufacturers like Nike and Adidas and resells them to consumers. Your target market consists of long-distance runners who do 5K and 10K races and marathons. Through your website, you specialize in helping each runner find the best shoe for his or her individual performance level and running style. What entities would a database for this business need to include? What are some business rules that would apply to these entities, and how would they be reflected in the database design? What are the stages in developing a data model for a database design? What new information and refinements are added to the model at each stage?

Ihave a music player on my phone. i can buy songs, add them to playlists and play them. obviously it would be redundant to store each song in each playlist; each playlist is just a list of pointers to the songs. for this lab you will simulate this behavior. your program will need to have options to: add songs to the system library (you will store the text of the first line of the song, rather than the audio) add playlists add songs to a playlist list playlists play a playlist list all of the songs in the library with a count of how many times each song has been played remove a song from a playlist remove a playlist remove a song from the library (and thus from all playlists that contain it) note that we will not be checking many error cases. in real programming this would be bad, you should usually try to recognize and respond to as many types of errors as you can. in the context of class we are trying to acquaint you with as many concepts as possible, so for the sake of educational efficiency we will not be checking most errors in this lab, you may assume that your user provides correct input. you may add all appropriate error testing if you wish, but we will not be testing for it.

When running anti-virus software , what could be a reason where recipitent is not guaranteed that data being streamed will not get interrupted?

Solve the following javafx application: write a javafx application that analyzes a word. the user would type the word in a text field, and the application provides three buttons for the following: - one button, when clicked, displays the length of the word.- another button, when clicked, displays the number of vowels in the word.- another button, when clicked, displays the number of uppercase letters in the word(use the gridpane or hbox and vbox to organize the gui controls).