Which one of the following non-functional quality attributes is not highly affected by the architecture of the software ? (A) Performance (B) Reliability (C) Usability (D) Portability

Which one of the following non-functional quality attributes is not highly affected by the architecture of the software ? (A) Performance (B) Reliability (C) Usability (D) Portability
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(C) Usability
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Consider the following database table having A, B, C and D as its four attributes and four possible candidate keys (I, II, III and IV) for this table: Image I: {B} II: {B, C} III: {A, D} IV: {C, D} If different symbols stand for different values in the table (e.g., d1 is definitely not equal to d2), then which of the above could not be the candidate key for the database table? (A) I and III only (B) III and IV only (C) II only (D) I only

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