Answer the following statements true (T) or false (F)
1. Random access files may process records randomly or sequentially.
2. A secondary key is essentially the same as a primary key.
3. Instructions such as OPEN and READ uses the LFN within the solution since that number designates the file in use.
4. It is important to design the record with care to save storage space.
5. A systems flowchart shows the flow of data between the pieces of hardware.
1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. FALSE
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Databases consist of many linked tables that may be thought of as __________ lists.
Fill in the blank(s) with correct word
____ was the first popular network operating system developed by Microsoft.?
A. ?Windows 2000 B. ?Windows Vista C. ?Windows NT 4.0 D. ?Windows ME
What is the time complexity of the following program?
double a = 0, b = 0; for (int x = 0; x <= M; x++ ) { a += Math.random(); } for (int x = 0; x <= N; x++ ) { b += Math.random(); } a. O(N+M) b. O(N*M) c. O(N) d. O(M)
To find a maximum object in an array of strings (e.g., String[] names = {"red", "green", "blue"}), use
a. Arrays.max(names) b. Arrays.sort(names) c. Collections.max(names) d. Collections.max(Arrays.asList(names)) e. None of the above