2023 CST 333 Database Systems Online Homework Assignment 4 Max 12 pts Exercise 1 2 pts Write a CHECK constraint that | Assignment Collections
Computer Science 2023 SQL
2023 CST 333 Database Systems Online Homework Assignment 4 Max 12 pts Exercise 1 2 pts Write a CHECK constraint that | Assignment Collections
CST 333 Database Systems (Online)
Homework Assignment #4 (Max: 12 pts)
Exercise 1 (2 pts)
Write a CHECK constraint that expresses the following condition on attribute Rating in table Movies in Movie Database: “Any possible value of Rating is either a null value or a number in the interval from 0 to 10 inclusively”.
Exercise 2 (2 pts)
Write a CHECK constraint that expresses the following condition on records in table Laptop in Hardware Database: “If the screen is larger than 20, then the price is higher than 2000”.
Exercise 3 (2 pts)
Write a CHECK constraint that expresses the following condition on table Schedule in University Database: “Each course (occurring in this table) is offered at least two times”. Hint: Use NOT EXISTS.
Exercise 4 (2 pts)
Write a CHECK constraint that expresses the following condition on table StarsIn in Movie Database:
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