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1. Why is it preferable to use a numeric-based attribute as the key attribute?
2. Why is it important that you identify all of the important relationships when developing an entity-relationship (E-R) diagram?
3. What are the relative advantages of the relational and object-oriented database models?
Consider system which produces budget reports for department at university. For whichever system you select, answer the following design questions. Who will use output?
provide an unique example of a supertypesubtype relationship. be sure to describe the relationship and discuss if the
in your opinion what are the three biggest challenges in planning and designing a solution for a programming
In this assignment you will be given a database and will create a user interface for it using the best practices that you have learned in the course. In industry designing and building a user interface takes months or even years to complete. We do..
What type of data and level of measurement does the Ethnicity variable represent: Is the data discrete or continuous? Is the data qualitative or quantitative? Is the data nominal, ordinal, ratio, or interval?
Create the tables Create the primary keys Create the foreign keys Add DML statements to: Add data of 1 customer who buys from the company Provide the DML to add 1 employee who interacts with customers Give DML to change data of the employee
Import your data into IBM SPSS software using your assigned data set. Save the data file for future use, and use IBM SPSS software to compute frequencies on all appropriate variables. Briefly summarize the results of the process in 50 to 70 words
Exit the program (If the user choices 4, the program will exit. If the user chooses 1, 2 or 3, the program will do what the menu item says it will do, and then the menu will appear again.
Describe how you have represented weak entities, if any exist and describe how you have represented super type and subtype entities, if any exist.
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.
Describe the information seen, using the terms such as table, schema and key. Describe the EMPLOYEE and EMP_PHOTO tables in detail.
Examine the influence that technology has had in creating a strategic partnership between HR and the organization. Share one (1) example to support your answer. Next, determine the values this strategic partnership has generated for both HR and th..
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