Maurice Tutor

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About Maurice Tutor

Levels Tought:
Elementary,Middle School,High School,College,University,PHD

Expertise:
Algebra,Applied Sciences See all
Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 1 Day Ago
Questions Answered: 66690
Tutorials Posted: 66688

Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 27 Aug 2017 My Price 6.00

valid_phone_numbers

Goal: Create a Referential Integrity constraint.

Using the class example database (SQLFUN):

  • Create a Referential Integrity constraint between the valid_phone_numbers table and the L_employees table. (This validates the phone_number value whenever a new row is added to the L_employees table.)
  • Add one more value to this table: 4707.
  • Create a new table, valid_phone_numbers, containing the phone numbers for all the employees. (Get this list of valid values from the phone_number column of the L_employees table.)

Goal: Use the date functions. Construct and use a table of constants.

  • Find the number of days between December 21, 2020 (winter solstice), and March 21, 2021 (spring equinox).

Put both dates in a table of constants, so they both have a datatype of date.

Answers

Maurice Tutor
(5)
Status NEW Posted 27 Aug 2017 10:08 AM My Price 6.00

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