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1. How are recursive relationships handled?
2. Discuss surrogate keys.
3. Describe the six default referential integrity actions.
4. How are N:M relationships implemented?
5. Why are null values ambiguous?
Suitable data that suits your requirement and design and explain the 3- schema architecture for the requirement.
How can replication help the performance of a distributed database and in what situations can replication hurt the performance of a distributed database?
A county wishes to create a database to control its local libraries. Each library has a number of employees, one of whom is designated as the manager of the library and is responsible for supervising employees and the general day-to-day management..
Assume that the value of attribute Z of the last record in the relation is changed from z3 to z2. Now list all the functional dependenciesthat this relation instance satis?es.
Does the relational model, as seen by an SQL query writer, provide physical and logical data independence? Explain.
Difference between obsolescent and redundant stocks
Provide an example of what kind of application would be able to take advantage of a distributed environment. Support your suggestion.
A Relational schema of your database in 3NF, clearly indicating attributes, the data type of each attribute, primary and foreign keys, candidate keys, and which attributes are nullable, giving reasons. List any assumptions you need to make.
you were tasked to create an oracle database for a company to track their employees and projects. after speaking with
What can be done to overcome store managers' resistance to the use of data and analytical tools?
Create a Microsoft Word table that identifies the advantages, disadvantages, computer requirements, initial costs, and future savings for an organization considering an engagement in virtualization.
Identify your dream vehicle (plane, automobile, boat, etc.) and estimate its cost and the interest rate if you financed its purchase. Enter data (loan amount, interest rate, term, etc.) onto spreadsheet and use the PMT function and cell references..
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