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1. Use the Invoice table structure shown below to answer the following questions:
a) Draw the dependency diagram and identify the primary key and all dependencies, including all partial and transitive dependencies. You can assume that the table does not contain repeating groups and that any invoice number may reference more than one product. (Hint: This table uses a composite primary key.)
b) Remove all partial dependencies, re-draw the new dependency diagrams, and identify the normal form for the table structure you created.
c) Remove all transitive dependencies, and draw the new dependency diagrams. Also identify the normal form for the table structure you created.
d) Include the relational schema for the final database table structure. Identify all primary keys.
explain exhausitively the problems associated with er diagrams with ellustrations
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4. Describe three ways to handle missing field values
What is an ER diagram? Why is it used in Database management system (DBMS)?
A collection of a same kind of entities is known as an Entity Set or entity type. Example: For the COLLEGE database defines earlier objects of concern are Students, Faculty,
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Example: RELATIONAL SCHEMA for PERSON: PERSON (PERSON_ID: integer, NAME: string, AGE: integer, ADDRESS: String) RELATION INSTANCE In this instance, m = 3 and n = 4
Can you scan double-sided documents - and remove blank pages? Our software and imaging systems supports duplex scanning, at the same time scanning both sides of a page. Program
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