Which of the following is NOT a tool database administrators can use to improve the performance of a database?
A) Database Documenter tool B) Oracle tool
C) Performance Analyzer tool D) Table Analyzer tool
B
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____________________ is a term commonly used to describe a concept that has a meaning with unclear boundaries.
Fill in the blank(s) with the appropriate word(s).
?A user interface (UI) is the key to _____, which includes user satisfaction, support for business functions, and system effectiveness.
A. ?testability B. ?usability C. ?encapsulation D. ?abstraction
? Critical Thinking Questions Case 9-2 ? Emily is functioning with her customer, Anna, on the design of a new database. She describes to Anna that key fields are utilized to access, coordinate, and preserve the data records. ?Anna asks if it is manageable to fetch records using a field or combination of fields that is not unique. Emily tells her that it is possible using one type of key. Identify the type of key used here.
A. ?Primary key B. ?Secondary key C. ?Foreign key D. ?Super key
Which of the following logical operators in the C programming language is evaluated as true if both sides of the operator are true?
A. = B. && C. || D. ==