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Q1) What are triggers used for, and why are they important in database systems? Provide an example of a situation where a trigger would be appropriate. What would the implementation of this trigger look like?
Be sure to cite research sources. You will be graded on the quality of your posts and your use of good research.
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.
What criteria would you use in selecting a life-cycle model for the project?
Suppose a database has tables given below. Write the names and e-mail addresses for all customers who have had stove repair which cost more than $50.
What kind of databases and database servers does MySpace use? Why is database technology so important for a business such as MySpace?
However, the only way you can access values is through queries to the databases. In single query, you can specify value k to one of two databases.
The database application project (DAP) for this course consists of the creation of a fully functional Microsoft Access database application for a real client.
Your task is to develop a database to support this activity.Here is what you need to be able to provide Custom Auto Body in order to land your first consulting contract:
Explain the differences between the storing data in Access and Excel. Why you would use a spreadsheet over the database?
Create an entity-relationship diagram and design accompanying table layout using sound relational modeling practices and concepts.
In 500 words or less, trace the history of the development of databases beginning with pre-computer days to the present.
Using Internet as the research tool for extra information not presented in text, describe why application roles are important part of the security model for databases.
What is the maximum rate at which data can be read from disk, assuming that we can only read data from one surface at a time? What is the average rotational latency?
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