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Explain why the addition of NOT NULL constraints to the SQL definition of the Manages relation would not enforce the constraint that each department must have a manager. What, if anything, is achieved by requiring that the ssn field of Manages be non-null?
assignment 4.3 complete problems 1-5 on page 283 of your textbook. test your sql code using oracle xe. once you are
Using the LC-3 Assembler, how would you store user keyboard input into an array, two characters per 16 bit address, so as to utilize the PUTSP command to output the string?
your boss has just heard about some nefarious computer activities called ping sweeps and port scans. he wants to know
1. code an oracle database trigger to enforce the constraint that an employee can never change his or her department.2.
The 1NF table(s) - and an explanation of why each table(s), is in 1NF - using normal form definitions.
How would you change the current design and how does your new design address the problems you have identified with the current design.
Use SSIS perform ETL on the invoice data to populate the data warehouse, in doing so you should demonstrate the use of SSIS filters/expressions and SQL where appropriate - Create an OLAP cube from your data warehouse and perform.
Describe the benefits of implementing the ACME ‘Next Gen' strategy. Explain why it is important for an airline to use a real- time data warehouse
Identify and describe three criteria that should be used to evaluate the selection of a database management system. Describe how an organization should use each criterion to evaluate database management system selection.
Write a query that counts the number of maintenance work orders for each vehicle in the maintenance work order table. Display the vehicle column and the corresponding count of work orders for each vehicle
How can you find the minimal key of relational schema? What do you understand by dependency preservation?
Controls which need a database to either execute transaction completely or not at all.
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