Match the following terms with their descriptions:I.Input maskII.Lookup fieldIII.Lookup WizardIV.Parameter queryV.Input Mask WizardA.Predefined list of values presented in a menuB.Criterion is provided when query is runC.Took used to help create consistent formatting of data in a fieldD.Helps create a list of predefined valuesE.Setting that guarantees consistent formatting of data in a field
Fill in the blank(s) with the appropriate word(s).
E, A, D, B, C
Computer Science & Information Technology
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The distance that the scroll box of a scroll bar will move when an arrow on the scroll bar is clicked is determined by
(A) LargeChange. (B) SmallChange. (C) Value. (D) Maximum.
Computer Science & Information Technology
Write ONE Java statement that computes and displays a random number between 1 and 25.
What will be an ideal response?
Computer Science & Information Technology
Use the schema R in the following questions:
R = (ABCDEFGH, {BE ? GH, G ? FA, D ? C, F ? B})
(a) What is a key of R?
(b) What is the attribute closure of GH ?
(c) Can there be a key that does not contain D? If such a key exists, give it; otherwise explain why it is not possible.
(d) Is the schema in BCNF? Give the reason for your answer.
(e) Use one cycle of the BCNF synthesis algorithm to decompose R into two sub-relations. For each sub-relation, explain whether or not it is in BCNF.
(f) Give the general condition that guarantees that a decomposition is lossless. Apply the condition to your decomposition to show whether or not it is lossless.
(g) Give the general condition that guarantees that a decomposition is dependency preserv- ing. Apply the condition to your decomposition to show whether or not it is dependency preserving.
(h) * Consider a schema (R, ), where R is a set of attributes and is a set of functional dependencies. Assume further that
Computer Science & Information Technology
Swap images are another way to provide links to multiple related pages.
Answer the following statement true (T) or false (F)
Computer Science & Information Technology