Computers and Technology, 04.11.2020 20:00 kel3194
Which is the best description of the difference between bound and unbound forms?
A. Bound forms are similar to hierarchical forms but pop up in a separate window, while unbound forms are flat forms that do not have subforms.
B. Bound forms are linked to a table or query, while unbound forms are not linked to a table or query but are used to operate and navigate a database.
C. Bound forms perform tasks based on user input, while unbound forms navigate between multiple forms.
D. Bound forms are the basic interface for inputting information into tables or queries, while unbound forms have one or more subforms within the main form.
Answers: 1
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Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?
Answers: 1
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Computers and Technology, 24.06.2019 01:30
Suppose a cpu with a write-through, write-allocate cache achieves a cpi of 2. what are the read and write bandwidths (measured by bytes per cycle) between ram and the cache? (assume each miss generates a request for one block.)
Answers: 1
Computers and Technology, 24.06.2019 10:20
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Answers: 1
Which is the best description of the difference between bound and unbound forms?
A. Bound forms are...
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