Consider a database for a university that represents students and classes. For simplicity, the database only needs to store the following information: Details of each student, such as their name, ID, and major Details of each class, such as its name, number, and syllabus Details about which student(s) are enrolled in which class(es), where a student can enroll in any number of classes and a class can have any number of students enrolled in it. With the information given, and considering the design principles discussed in class, how many tables should this database use to represent the information

Jason, samantha, ravi, sheila, and ankit are preparing for an upcoming marathon. each day of the week, they run a certain number of miles and write them into a notebook. at the end of the week, they would like to know the number of miles run each day, the total miles for the week, and average miles run each day. write a program to them analyze their data. your program must contain parallel arrays: an array to store the names of the runners and a two-dimensional array of five rows and seven columns to store the number of miles run by each runner each day. furthermore, your program must contain at least the following functions: a function to read and store the runners’ names and the numbers of miles run each day; a function to find the total miles run by each runner and the average number of miles run each day; and a function to output the results. (you may assume that the input data is stored in a file and each line of data is in the following form: runnername milesday1 milesday2 milesday3 milesday4 milesday5 milesday6 milesday7.)

Column a of irma’s spreadsheet contains titles for each row, but her document is too big and will be printed three pages across. she wants to be sure that every page will be understood. what can irma do to with this problem?

Two students are discussing electricity that has a frequency of 60 hz. student a says that this type of electricity is referred to as ac. student b says that in this type of electricity, the electrons flow in only one direction. which of the following statements is correct? a. only student a is correct b. only student b is correct c. both of the two students are correct d. neither of the two students is correct