INFO321 Assignment 7:
Part 1: Complete review question 17.5 on page 509 in the Connolly text; explain each constraint and provide an example of each constraint. The response should be in the order of 500+ words.
17.5: Describe the purpose of integrity constraints and identify the main types of integrity constraints on a logical data model.
Part 2: Background; We want to keep track of the price we charge for each type of part, the supplier for each type of part, and the amount we pay the supplier for each type of part (the cost). Each supplier can provide us with many different types of parts, but each part can be provided to us only by one supplier. This requires a one-to-many relationship.
Part Price, Cost, Supplier, Street, City, State, Zip, Telephone
Supplier Street, City, State, Zip, Telephone
Part Price, Cost, Supplier
Table: Parts (Part, Price, Cost, Supplier, Street, City, State, Zip, Telephone)
Complete the following:
1. Copy and paste the 2NF definition from the Connolly text (see page 422) (Completed)
“Second Normal Form (2NF) is a relation that is in first normal form and every non-primary-key attribute is fully functionally dependent on the primary key.”
2. Is the above table in 2NF?
3. Using the table and field names in the above table, explain your answer in plain English.
Your submission must be original, including supporting sentences using the terms, concepts, and theories with the page number and website from the required readings or other material. Your submission should paraphrase material you reference, restrict your use of direct quotes (copy and paste) to less than 15% of the submission (the required copy and paste content will not be considered part of the 15% guideline).