Describe what relationship types represent in an ER model and provide examples of unary, binary, ternary, and quaternary relationships.
What will be an ideal response?
A relationship type is a set of associations between one or more participating entity types (see
Section 12.2). Examples:
Unary: Staff Supervise Staff (also called recursive relationship)
Binary: Branch Has Staff
Ternary: Staff Registers Client at Branch
Quaternary: Solicitor Arranges Bid with a Buyer supported by a Financial
Institution.
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Which type of attack is the easiest to carry out?
A. privacy policy violations B. criminal actions C. internal violations D. external violations
Match each term with its definition
A. techniques that limit access to proprietary materials B. content that is not subject to copyright C. a nonprofit organization that helps people retain their copyright while still allowing others to use their material D. techniques used to make webpages more relevant in search results E. the set of moral principles that govern people's behavior