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UNDERSTANDING THE ELEMENTS OF AN ERD
A wealthy businessman owns a large number of paintings that he loans to museums all over the world. He is interested in setting up a system that records what he loans to whom so that he doesn't lose track of his investments. He would like to keep information about the paintings that he owns as well as the artists who painted them. He also wants to track the various museums that reserve his art, along with the actual reservations. Obviously, artists are associated with paintings, paintings are associated with reservations, and reservations are associated with museums.
QUESTIONS:
1. Draw the four entities that belong on this data model.2. Provide some basic attributes for each entity, and select an identifier, if possible.3. Draw the appropriate relationships between the entities and label them.4. What is the cardinality for each relationship? Depict this on your drawing.5. What is the modality for each relationship? Depict this on your drawing.6. List two business rules that are communicated by your ERD.
If x denotes the mean of a sequence of numbers x1, x2,.....xn, the variance is an average of the squares of the deviations of the numbers from the mean, and the standard deviation is the square root of the variance.
every company needs a backup plan to recover data that has been wiped out by operator error viruses or hardware
What drawbacks are there in implicit dereferencing of pointers, but only in certain contexts? For example, consider the implicit dereference of a pointer to a record in Ada when it is used to reference a record field.
questionexplore paper on vmware securityoutline a. introductiona. definition b. background c. frameworkb. bodya.
questioncomputers are everywhere. watching television driving a car using a credit card ordering fast food and the more
why The pivot is then moved to the end and partition is performed, then after the partition, the pivot moves to its rightful place.
optimizing pseudocodesstudy how pseudocodes can be optimized to improve their efficiency.in part 1 you will complete
why computers and software used to better our society.
I am using Visual Basic.NET with Microsoft Visual Studio 2005. I have a project with a User Control that I have created. I have a button that I named Clear. I require to clear the data from my maskedtextbox named "mtbPAC".
Modify the program written below so that it deals a five-card poker hand. Then write functions to accomplish each of the following.
This solution provides the learner with an understanding of network activity monitoring. In particular, solution provides a discussion on potential management plans fo monitoring network activities and maintaining security of the network.
the objective of the project is to recommend an upgraded wireless technology for a major telecommunication carrier.
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