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Construct an er diagram for a hospital with a set of patients and a set of medical doctors. associate with each patient a log of various test and examination conducted.convert er diagram into tables
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.
What rules would have to be enforced based on entity type? Choose one entity type and discuss what enforcement is needed by the database or application.
1. what a query execution plan?2. discuss the reasons for converting sql queries into relational algebra queries before
Create ERD containing Order and Customer entity types connected by 1-M relationship from Customer to Order. Select suiatble relationship name using your common knowledge of intersection.
Pharmacy systems today are more efficient and user friendly when compared to the systems 20 years ago.
Consider a disk with a sector size of 512 bytes, 2000 tracks per surface, 50 sectors per track, ?ve double-sided platters, and average seek time of 10 msec.
You have a file which contains credit card records. Each record contains field for the card number, expiration date, and name of card holder. Explain what primary problem you try to solve is.
the development of complex algorithms that can mine mounds of data that have been collected from people and digital
Give a primary key for each relation. Are there any relations for which there is an alternate candidate key which you have not chosen as the primary key? Why or why not?
Design a DSS to help decision-makers run the 2012 London Olympics-Write down the step-by-step solution to train the classifier by the basic perceptron learning rule.
if those were for me wed keep them all in two to three minutes longer he says. but thats not my call-its the
Identify and explain the differences between a stack and a queue data structure
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