How does a null value differ from a blank value

Assignment Help Basic Computer Science

Reference no: EM131219057

a. What is a null value?

b. How does a null value differ from a blank value?

c. What are three interpretations of null values? Use an example in your answer

d. Show SQL for determining the number of null values in the column Employee First Name of the table EMPLOYEE.

e. Describe the general-purpose remarks column problem.

Reference no: EM131219057

Questions Cloud

Provide the estimate of the desired probability : Write a MATLAB program to estimate this probability through Monte Carlo simulation techniques.- provide the estimate of the desired probability.

Compute the test scores for the students : CS 291 - Computer Science II - Data Structures and Algorithms - Write a code fragment for a function that takes either a pointer (or reference) to student record calculates the course grade from exam scores, using a simple rubric - Compute the test..

Describe two ways to identify inconsistent values : Describe two ways to identify inconsistent values. Are these techniques certain to find all inconsistent values? What other step can be taken?

Determining the network configuration : Understanding basic network terminology and the rationale for specific network configurations is key for understanding IT. For this submission:

How does a null value differ from a blank value : Show SQL for determining the number of null values in the column Employee First Name of the table EMPLOYEE.

Generate a periodic sequence of numbers that cycles : Write a MATLAB program to verify that the sequence produced does in fact cycle through each of the integers 1-100 exactly once each before the sequence repeats.

Manipulating computers instead of manually : Sergons use which technology to perform delicate operations on patients by manipulating computers instead of manually?

Determine whether each table is in either bcnf or in 4nf : Determine whether each table is in either BCNF or in 4NF. State your assumptions.

Perception and consumer behavior on purchasing hybrid cars : Perception and consumer behavior on purchasing Hybrid cars

User Account

All Pages