Computers and Technology, 21.01.2021 22:20 nina1390
The External Model concerns itself with only the portions of the database that can end user can interact with. What if multiple groups of End Users (such as the Marketing Department and the Account Department) share a few tables. What issues could arise if one group makes a change that impacts another. What are some ideas you can come up with avoid this
Answers: 2
Computers and Technology, 22.06.2019 06:50
Type the correct answer in the box. spell all words correctly. which view of report creation allows you to customize the report before the database program creates it? creating a report in allows you to customize the report before the database program creates it. pl asap
Answers: 1
Computers and Technology, 22.06.2019 08:50
Can online classes such as gradpoint track your ip location like if im taking a final and i give somebody else my account and they take the final for me will it show where they are taking the final from? and can this be countered with a vpn
Answers: 1
Computers and Technology, 22.06.2019 14:30
Hi plz 11 ! when planning a table, what step comes first: "define the column headers" or "calculate the number of columns/rows"? a. calculate the number of columns/rows b. define the column headers
Answers: 1
Computers and Technology, 23.06.2019 17:30
When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2Äā, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5Äā slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?
Answers: 2
The External Model concerns itself with only the portions of the database that can end user can inte...
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