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The DBA denormalized some of the data in Premiere Products database to enhance performance, and one of the resulting tables is following:
Customer (CustomerNum, CustomerName, Street, City,State, Zip, Balance, CreditLimit, RepNum, RepName)
Which field or fields cause table to no longer be in third normal form? In which normal form is denormalized table?
Describe the difference ways of implementing one-to-one relationships. Assume you are maintaining information on offices (office numbers, building, and phone numbers)
For each table argue whether or not interference with another transaction is possible. Illustrate concurrency control method using two phase locking.
Create a structurally sound relational database schema showing the minimum number of fields, tables, and relationships between the tables.
Explain the concept of physical data independence and its importance in database systems, List four significant differences between a file-processing system and a DBMS.
These are normalization procedures suggested by Shome and Cornell. EQ Tools program permits any of these normalization (or scaling) approaches.
First, specify the foreign keys for this schema, stating any assumptions you make. Next, populate the relations with a few example tuples.
Explain the conceptual model employed in the design of these types. Describe the analogies and concepts these monitors expose to users, including the task-domain objects users manipulate on the screen.
Design and build a prototype data warehouse using the data on Spend over £25,000 in the Science and Technology Facilities Council
Perform the conceptual database design using Entity-Relationship model. You must submit the Entity-Relationship diagram of your database and develop queries in the target DBMS
Explain the use of facts, dimensions and attributes in a star schema model. Explain the use of facts, dimensions and attributes in a star schema model.
Point out the changes you require to make to Premiere Products database to support following situation: A customer is not necessarily represented by a single sales rep but can be represented by several reps.
Explain efficient algorithm that, provided edge-labeled graph G with distinguished vertex v0 and sequence s = σ1, σ2, ..., σk of characters from Σ, returns path in G which begins at v0.
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