Create a trigger that prints the daily catalogue on change of any cosmetisc item

Create the complete database.

What is concurrency control? What is the need of applying concurrency control methods in database? Give an example. Write the algorithm of timestamp based ordering protocol and explain through an example. What are the problems with this algorithm and what are the proposed solutions for it?

Identify multi-valued dependency in the above diagram if any. Justify.

Create a report that shows the overrall revenue generated week wise

Write all the relational schemas.

State the differences between classification and clustering. Write an algorithm of K-Means clustering. Explain the algorithm with the help of an example.