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1. One of the biggest challenges of building e-commerce sites has been the ability to quickly deliver merchandise ordered by customers over the Web. From what you read in the book so far or using your own experience with ordering merchandise over the web, why do you think companies are turning to database solutions to help them improve their supply chain management and ordering capabilities for the customer?
2. The entity relationship model is in wide use as a design tool for relational databases. Why do you think designers have chosen this model, and what makes it an effective design tool?
To identify the number of employees at the New Book Sales Corporation, you view the records in the Sales Department table.
The data dictionary serves as an important data management tool by? assigning attributes to the data, maintaining data in updated form.
requirementscreate a database from scratch that contains at a minimum the elements listed below. the type of database
Explain what is the purpose of Database? The purpose of a database is to store information about certain types of objects. Give an example of two related TABLES.
Select one of the Real World Scenarios and use the experience you have that is related to the scenario you have chosen or research online; and then post your comments and solutions about your experience.
provide an unique example of a supertypesubtype relationship. be sure to describe the relationship and discuss if the
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.
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,
Analyse the behaviour of the most important stateful object of the system and document this behaviour with.
In order to move forward, the local university will need to develop a data model that will retain student records and perform various data extract transform and load (ETL) processes.
Diagram of the table containing the initial data - state how you checked that the XML file is well-formed and what messages are sent if it is not well-formed?
We want to construct a database for a world-wide package delivery company. Define a set of relational schemas and identify primary and foreign keys. Try not to include redundant schemas.
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