An HR system includes a Departments table and an Employees table. Each employee record includes a field called DepartmentID that matches an entry in the Departments table. What role does DepartmentID play in the Employees table? Options:A. Primary KeyB. Candidate KeyC. Foreign KeyD. Surrogate Key Correct Answer: C. Foreign Key Explanation:DepartmentID links each employee to a department by referencing the Departments table. It is not unique in the Employees table, so it isn’t a primary or candidate key. Surrogate keys are artificial IDs, not cross-table references.
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What imaging process was used here to improve the image by a…
What imaging process was used here to improve the image by accentuating edges?
A subscription service keeps track of customers in a table c…
A subscription service keeps track of customers in a table called Customers. Each row has a unique CustomerID, along with fields like Name, Email, and JoinDate. Which field serves as the primary key in this table? Options:A. NameB. EmailC. CustomerIDD. JoinDate Correct Answer: C. CustomerID Explanation:The primary key must uniquely identify each record. Names and emails can be duplicated, and JoinDate certainly isn’t unique. CustomerID is specifically designed as a unique identifier.
This new advancement uses the bulk modulus of differen…
This new advancement uses the bulk modulus of different tissues to create images, and is called
Creation and utilization of simulated data to visualize roun…
Creation and utilization of simulated data to visualize round borders is called
Which of the following is the correct SI unit for velocity?
Which of the following is the correct SI unit for velocity?
How many bits are needed to to store 40 shades of gray?
How many bits are needed to to store 40 shades of gray?
Which process is best for visualizing the borders of round s…
Which process is best for visualizing the borders of round structures?
Which economic system relies primarily on government control…
Which economic system relies primarily on government control?
Discuss the impact of globalization on local economies. Prov…
Discuss the impact of globalization on local economies. Provide specific examples of how globalization can affect both developed and developing countries.