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Define each of three database models, hierarchical, relational, and object-oriented, and give a specific referenced example of each of these model types implemented in a functioning database in use today (do not just use a vendor's DBMS product alone like Oracle or MS SQL Server).
Need a system that networks its 3 campuses in the US and one campus in Singapore. Transaction data for all campuses should be available to all locations. In addition, students should be able to use the Internet to view classes, enroll, register, and ..
List the sequence of relational algebra operations needed to implement the queries.
A small business with 100 computer workstations is installing a new local area network. All of the users perform the usual operations of e-mail. State your reasoning. Draw a floor plan for each If possible, show both floor plans on one page.
Convert the table to 3NF. Represent your answer in DBDL. (i.e. Give table name and fields. Underline the primary key. Draw an entity-relationship diagram showing all relationships.)
Did the corresponding lines for invoices 1001 and 1008 in table LINE get deleted automatically? Can you explain why?
Design a Database schema
List the names of agents that placed an order for customer C003 or customer C006. List all pair of products names that are in the same city, along with their city name.
Create use case to describe a typical sales process. Then make a sequence diagram for use case.
What advantage is there in storing metadata in tables? Is Microsoft Access a DBMS? Why or why not? List the several consequences of a poorly designed database.
Find the name and membership number of members who have borrowed more than five different books of that publisher.
Create a link list in ADT c to maintain employee information like name,empid,basic salary and address.1.add employee info to the list if the empid is valid.
Compute a canonical cover for the above set of functional dependencies (show each step of your derivation with an explanation).
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