CS145 - Spring 2003
Introduction to Databases
Online (OTC) Account Information
Please email course staff at
cs145@cs.stanford.edu for
further assistance with your OTC account. To have your password
reset, just send your account login (the cs145_user one) with your request.
You should never send a password, and staff should never ask for it.
(Keep the last line in mind; it is often true of good security systems
in the real world.)
Homework 5 Questions and Answers
- When asking a question about OTC problem text or answer choices, please
quote the relevant portions of the assignment.
- After you complete a submission, please keep a copy of the entire Web page
with your score and submission certificate. In case of data loss, you may
be asked to present the page for your highest-scoring submission in order to
restore your high score.
- In the temporal relational algebra question for the natural join,
one of the correct solutions was actually incorrect. This question
was corrected around 9:00pm Sun 1 Jun 2003.
Depending on which answer choices you received, this
error may have affected your choice of answer. Sorry about the error
in the question, and thank you to
Jenny Finkel,
Armando Chavez, and
Matt Rubens
for reporting it.
CS145 Web pages -
email the staff