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What is one reason for grading changes over time?

Which factor contributes to spoilage and damage during transport?

Question 8 The weight of frogs in grams in a marsh population are normally distributed with mean (μ) equal to 22 grams and standard deviation (σ) equal to 1.4 grams.  What is the probability that a randomly sampled frog weighs less than 20.5 grams? 

If X → Y and Y → Z, then X → Z holds by which rule?

Consider the following tables:  Student Enroll Which query correctly performs the join to List each student’s name with the Course_ID they are enrolled in? 

Consider the following E–R diagram: What does this diagram indicate about participation in the advisor relationship?

A company stores which manager supervises which employees.Each manager supervises many employees, but each employee has only one manager. Relationship set: supervises(manager, employee, start_date) What should be used as the primary key of the relationship?

Throughout this course, you explored many aspects of database systems data modeling, SQL queries, normalization, transactions, web integration, and more. Describe clearly TWO things you learned in this course that you believe will be most useful in real-world software development, and explain why each one is important.

An order is placed at exactly one store, but a store can process many orders.Relationship set: placed_at(order, store, timestamp) Which key should be used for the relationship set?

Considering the table:  If guest Jacob changes his last name after marriage (e.g., to “Jacob Miller”), what anomaly occurs?