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When a student has not chosen a major at a university, the university often enters a value of "Undecided" for the major field. Is "Undecided" a way to represent the null value? Should it be used as a default value? Justify your answer carefully.
Create a table (by your own imagination) which comprises the least 25 patients with next information (columns): Calculate average of Value1 for each Gender.
How and why did database management systems become the organizational data management standard? Describe some advantages of database approach over file-system approach.
First, specify the foreign keys for this schema, stating any assumptions you make. Next, populate the relations with a few example tuples.
Indicate the changes (using the shorthand representation) that you would need to make to the original premiere products database desing to support the following requirements.
Show the REA diagram using Microsoft Word
You have been asked to develop a database utilizing only the written problem description given by the client. In reviewing the description.
Sketch an object-oriented model for a small private airport database that is used to keep track of airplanes, their owners, airport employees, and pilots.
Create a data warehouse for electronics store chain. Chain has 20 stores in 5 cities. Each store has different sections comprising computers, DVDs, TVs, audio, home appliances etc.
Company's databases do not give them with information required for market planning, lead generation, and account management. What does author say is root cause of this problem?
Use Microsoft Access to develop preliminary (no keys and no relationships) database tables for Huffman Trucking Driver Log.
Write an application that creates a database named PhoneBook. The database should have a table named Entries, with columns for a person's name and phone number. Next, write an application that lets the user add rows to the Entries table,
What is meant by cardinality of a relationship? Your answer requires to be thorough and specific. Be sure to include the two types of cardinality
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