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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.
Defining Internal Classes and Operations When we enlarge algorithms, new classes can be added to the store intermediate results. A complex operation could be looked at, as a c
What is called an evaluation primitive? A relational algebra operation annotated with instructions on how to evaluate is known as an evaluation primitive.
What is completeness constraint on generalization? Define the variation between total and partial design constraint. Give an example each. Ans: Completeness Constraints
A relation has: Relational Schema Relation instance Relational Schema: A relational schema shows the relation's name, its attributes and the domain of every a
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
what is natural join?
What is the use of rename operation? Rename operation is used to rename both relations and an attributes. It uses the as clause, taking the form: Old-name as new-name.
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
Write a program within embedded SQL to associative the total trip expenses of the salesman named ‘John' for the relations. EXEC SQL BEGIN DECLARE SECTION; long total_expenses;
How can i turn a conceptual entity relationship diagram into a logical entity relationship diagram? what do i have to do with "mandetory or" and "optional or" relationships?
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