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Draw the hash table of length 11 that results from using the hash function h(i) = (2i + 5) mod 11, to hash the keys 12, 44, 13, 88, 23, 94, 11, and 39, assuming that collisions are handled by open addressing with linear probing.
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.
Create an entity-relationship diagram and design accompanying table layout using sound relational modeling practices and concepts.
Find the entities from the functional requirements. Entities can come from Nouns in the text, they may also come from forms, reports and legacy code.
Create a data warehouse for electronics store chain. The chain has 20 stores in 5 cities. Each store has different sections including computers, DVDs, TVs, audio, home appliances etc.
What is Recovering a database via rollforward? What is aim of transaction log? What is contained in transaction log?
What does CHS stand for? List three items contained in the FAT database. List two features NTFS provides that FAT does not.
Design an updateable database for storing customer and sales data. Explain how to deal with the problems of missing data.
Implement that entity as a database table with two subtypes, Games and Movie.
Write the application for university admissions office. Prompt user for a student's High School Grade Point and an admission test score.
our current database uses dictionary-managed tablespaces. In running various performance tuning scripts, you have discovered that one of these tablespaces seems to have run out of space long before you calculated that it would.
Examine different sales transactions. Design a context diagram and a level-0 diagram that represent the selling system at the store.
Produce a scatterplot of Rent vs. Size (square meters of the apartment) for the rental data in rent.
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