Computers and Technology, 12.04.2021 21:10 EBeast9741

For the following queries, determine the minimum cost of the query (in I/Os), if you can have any number of secondary (also known as alternative-2) indexes available. Each index has to be on a single key attribute; composite keys are not allowed. a) select count() from employees where name = ‘John Smith’; b) select avg(salary) from employees where name = ‘John Smith’; c) select count() from employees where birthdate < ‘1-1-1980 00:00’;

Answers: 3

Show answers

Another question on Computers and Technology

Computers and Technology, 21.06.2019 19:50

Python write an expression that executes the loop body as long as the user enters a non-negative number. note: if the submitted code has an infinite loop, the system will stop running the code after a few seconds and report "program end never reached." the system doesn't print the test case that caused the reported message. sample outputs with inputs: 9 5 2 -1

Answers: 3

Answer

Computers and Technology, 22.06.2019 10:50

Write a 3-4 page apa formatted paper comparing your organization’s it strategy with the best practices outlined in your course text. content should include, but not be limited to: developing and delivering on the it value, developing it strategy for the business value and linking it to business metrics. your paper should include an abstract and a conclusion and a reference page with 3-5 references

Answers: 1

Answer

Computers and Technology, 22.06.2019 14:30

Create a pseudocode design to prompt a student for their student id and the titles of the three classes they want to add. the solution should display the student’s id and a total bill. • bill a student using the following rules: o students can only add up to 3 classes at a time.

Answers: 3

Answer

Computers and Technology, 23.06.2019 02:30

People with high self-esteem: accept their strengths and weaknesses. believe that failed experiences are failures of their whole self. feel good about who they are only when they reach total success. need positive external experiences to counteract negative feelings that constantly plague them.

Answers: 1

Answer

You know the right answer?

For the following queries, determine the minimum cost of the query (in I/Os), if you can have any nu...

Questions