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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. Your supervisor has asked you to write a report to address the concerns of the customer and figure out how to expand the single server / single location database so the other 500 locations will be able to access and update the system.
Write a 2-3 page paper in which you:
What is meant by data independence? Explain your answer and identify two benefits of separating application software from the database management system.
What is Recovering a database via rollforward? What is aim of transaction log? What is contained in transaction log?
Use at least three (3) quality resources in this assignment. Note: Wikipedia and similar Websites do not qualify as quality resources.
Draw a DFD (Context and Level 1) for placing an order based on the E-R diagram shown here.
Create a state transition diagram that describes typical student states and how they change based on specific actions and events.
Draw an object-oriented model for a small private airport database that is used to keep track of airplanes, their owners, airport employees, and pilots.
Draw an Entity-Relationship diagram for this database using UML notation. Be sure to include all the entities mentioned above, together with attributes (including primary key attributes).
What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure?
What actions does a referential integrity constraint prevent from occurring when data is inserted in a table that contains this constraint?
To lock any other vertex, the transaction must have visited all the parents of that vertex and must be having a lock on one of the parents of the vertex. Show that the protocol ensures serializability and deadlock freedom.
Create a database design (schema) based on the following problem description.
Write the CREATE INDEX statements to create a clustered index on the GroupID column and a nonclustered index on the IndividuallD column of the GroupMembership table.
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