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Explain how the problem of including any number of children's names in AddressBook can be solved by defining an additional relation that has only single-valued entries (using perhaps Name and Child as attributes).
The local library wants to update its book check process. To do this, the system will need to record data about what entities? What specific data about the entities will need to be stored
What errors prevent the table displayed above from being first normal form compliant? Bring the table(s) into first normal form compliance without loss of any data. Identify primary and foreign keys (when present) for all tables.
Willy Wonka is considering starting a production line to produce fizzy lifting drinks. As Chief Oompa Loompa (COL) you have access to a wide variety of financial data to help you determine whether bringing the new production line on will be a sma..
Let R(A, B,C, D) be a relation and suppose it contains the following dependencies: A → B, BC → D, and D → A. - Find all super keys of R.
Obtain the columns names and data types of the view USER_TABLES using the DESCRIBE command. Retrieve the names of all the tables of a user's database tables using the SELECT table_name FROM user_tables; command.
Convert each of the previously identified entities to third normal form. Make certain that the necessary foreign keys have been added to the final tables to support the relationship shown on your initial ER model.
Perform a Payback Analysis for given project - Draw a decision table that shows all possible rules for the above scenario.
Customers Dunne an Olowski are included in the CUSTOMER table also in CUSTOMER_2 table. Explain How many records are returned when using the MINUS operator?
Consider a student club or organization in which you are a member. What are the data entities of this enterprise? List and define each entity.
An ER diagram for the system. Show all entities, relationships, cardinalities and optionalities. Also, include all intersection entities. You must use the Finkelstein methodology as per the study book and tutorials.
Examine different sales transactions. Design a context diagram and a level-0 diagram that represent the selling system at the store.
Imagine that a customer has come to your team and has requested a simple application that will allow the customer to store client names, addresses, and telephone numbers. The application will be written as a console app
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