Which of the following is true of in-house custom-developed software?
A. They are less expensive than off-the-shelf software.
B. The organization has to tailor its applications to the software.
C. They are easy and comparatively cheap to make.
D. Custom-developed software require no adaption even if needs change.
Answer: B. The organization has to tailor its applications to the software.
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where Emp21 is stored at site B and Emp22 is stored at site C. A query at site A wants the names of all managers in the accounting department whose salary is greater than their age. Design a plan for this query, using the assumptions on page 704 for table and attribute sizes. Assume that the items in the Age column are two bytes long.
Suppose that we have a relation Employee2 (SSnum, Name, Salary, Age, Title, Location) which is partitioned as Emp21 (SSnum, Name, Salary) Emp22 (SSnum, Title, Age, Location) What will be an ideal response?
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