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Question: Given the following business scenario, create a Crow's Foot ERD using a specialization hierarchy if appropriate. Two-Bit Drilling Company keeps information on employees and their insurance dependents. Each employee has an employee number, name, date of hire, and title. If an employee is an inspector, then the date of certification and certification renewal date should also be recorded in the system. For all employees, the Social Security number and dependent names should be kept. All dependents must be associated with one and only one employee. Some employees will not have dependents, while others will have many dependents.
D. C. Tsikriktsis and la M. Interstress, "Directions in 00 Research." In reference [22.9]. This paper lends further weight to the contention of the present.
Write the SQL code that will create the table structure for a table named EMP
Show an alternative design using the General notations for the attribute described in Problem 2 that uses only entity types (including weak entity types if needed) and relationship types.
Assume that a student table in a university database has an index on StudentID (the primary key). and additional indexes on Major, Age, Marital status, and HomeZipCode.
A point of synchronization between the database and the transaction log is called a(n): An ACID transaction is one that is:
What errors prevent the table displayed above from being first normal form compliant - Bring the tables into first normal form compliance without loss of any data. Identify primary and foreign keys for all tables.
Identify the stakeholders for your selected scenario. Create a plan for an hour-long interview with representatives of these stakeholders. Then meet with the instructor to discuss possible answers to the questions.
Which field or fields cause a table to no longer be in third normal form? In which normal form is denormalized table?
Write SQL SELECT statements to retrieve the following information from the ClassicModels database - select the product name, scale, vendor and product code for all models of classic cars built between 1948 and 1966. Display the results in order of..
Describe the mechanism of attribute/relationship inheritance. Why is it useful
You will design a database for CTU, which includes three entities (tables): Students, Faculty, and Classes. Note a class refers to a particular class section. For example, the current CS251 you are taking is one class instance (i.e. CS251-01), an..
Describe the basic features of the RDB model and discuss their importance to the end-user and the designer.
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