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Load sample data into the database tables design and test queries to return the following information
• All rows and columns for employees• All rows and columns for customers• A count of sales orders• A list of customers who have placed orders• Sales order information including individual items
Prepare a write-up in Microsoft word to describe how busicorp might benefit in the future from data warehousing and data mining include the types of data you would transfer into the warehouse and what aspects of the business might benefit from the information that could be mined from the warehouse.
What are the various symbols used to draw an E-R diagram (any 3)?
Discuss the types of integrity constraints in which must be checked for the update operations - Insert and Delete. Give examples. Insert operation can violet any of the subse
Explain trivial dependency? Functional dependency of the form α ->β. is trivial if α C β. Trivial functional dependencies are satisfied by all the relations.
This assignment is worth 45% of your final grade for this module. Marks will be awarded as follows: Prototypes (wireframe and web based prototype) You are expected
example of embedded SQL query
Atomicity: It describes a transaction to be a one unit of processing. We can also say either a transaction will be finished completely or not at all. In the transaction example 1
(a) Explain the three types of potential mistake which could occur if concurrency control is not properly enforced in the database system. Support your answer with appropriate ex
What is a SELECT operation? The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
What are the requirements to ensure the objectives of file management principle is realized?
After going by the database architecture, let us now dwell on an important query: how is the data organised in a database? There are a lot of basic structures that exist in a datab
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