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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?
write a two to three 2-3 page paper in which yourecommend at least three 3 specific tasks that could be performed to
Create the primary key and foreign keys using a UML Class diagram for each table and compare and contrast the key aspects that each system offers
1. design an relational model rm model of a database db that will be useful for each of the chosen enterprises. hint
A few years have passed, and the restaurant has grown to become a national restaurant chain. Now, they are concerned that remote and branch offices and restaurants in all fifty states will not have ready access to the data.
List the names of the deceased artists and the number of years of age they were when they died (for example, an artist born in 1950 and deceased in 2001 has an age of 51).
Write the name(s) of employee(s) who works(work) on every project located in Houston. Write the name(s) of employee(s) who only works(work) on every project located in 'Houston.'
Due to the tight deadline, the project team was assembled quickly with ten (10) team members of various backgrounds. There are three (3) offshore developers in India and two (2) QA testers in San Francisco, CA.
Pick one of the different types of SQL statements (data definition language, data manipulation language, or data control language). Describe how that type of statement is use.
imagine that you have been assigned as a project manager to manage your companys e-commerce website where customers can
Write the SQL DDL to create the database that contains each of the relations shown in the above ERD and write and execute SQL definition commands
How would you change the current design and how does your new design address the problems you have identified with the current design.
Write a program to sort these back into a single file. Oh, and we only have a few nanoseconds to do it, so you'd better do it with pthreads!
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