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1.Explain the di?erence between logical and physical data independence.
2.What are the responsibilities of a DBA? If we assume that the DBA is never interested in running his or her own queries, does the DBA still need to understand query optimization? Why?
provide an unique example of a supertypesubtype relationship. be sure to describe the relationship and discuss if the
Implement that entity as a database table with two subtypes, Games and Movie.
To analyse a set of data, and write a memo, identifying and explaining your insights into the operation of Todd Restaurants.
imagine that you work for a consulting firm that offers information technology and database services. part of its core
suppose that you are currently employed as an information security manager for a medium-sized software development and
Create a decision table that describes the movement of inventory and draw a decision tree that describes the merchandise inventory management process.
Design a program that displays a table of the contigrade temperatures 0 through 20 and their Fahenheit equivalents. The formula for converting a temperature from centigrade to Fahrenheit is.
prepare a 2- or 3-page paper for this assignment.pick an online database and then describe entities and attributes that
Create an XML file with markup tags and some sample data to represent a list of invoices. Include the XML tags for two invoices in the list. Also, assume the invoices are created from a database whose tables are shown in the following database re..
What are triggers used for, and why are they significant in database systems? Give an example of situation where a trigger would be appropriate. What would implementation of this trigger look like?
You are required to develop an ER model to represent the information requirements for a database that Queensland Liquor National online trader system will use as described on last page.
Data Modeling and Normalization
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