Question: What database concept states that the primary key cannot allow null values? a . legal - values integrity b . structural integrity c . referential

What database concept states that the primary key cannot allow null values? a. legal-values integrity b. structural integrity c. referential integrity d. entity integrity

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Q:

6.3. How does SQL allow implementation of the entity integrity and referential integrity constraints described in Chapter 3? What about referential triggered actions? DATABASE PLEASE TYPE ANSWER I...

Q:

CSC239-01 Database Systems Test #1 BUSINESS & COMPUTER SCIENCE DEPARTMENT DATABASE SYSTEMS Spring 2018 Page 3 . Using two relational database tables, PROJECT and MANAGER, eliminate the redundancies...

Q:

Question 21 6 points Which of the following about integrity constraints in relational database systems is/are correct? Select all that apply The entity Integrity rule states that no primary key...

Q:

the following relational algebra questions based on tables S1 and S2 (below) Question 1 What is the output of S1 S2 ? The row identified by sid 22 The rows identified by sid 31 and 58 The row...

Q:

The states that a tuple in one relation that refers to another relation must refer to an existing tuple in that relation Select one: O physical data independence NOT NULL constraint O Entity...

Q:

My name is Salam Abdulhussein and I need this to be done as soon as possible. Please follow the steps one by one and make sure everything is correct Global Bike, Inc. ERP for Sales / Collection USING...

Q:

could someone please help me these access assignment Accounting Information Systems Access Assignment S&S Revenue Database Introduction to Microsoft Access: Microsoft Access is representative of...

Q:

needed a bit of help on the ones I got wrong or why I got them wrong I wasnt given an ER diagram to do this. this was all the information I received. Question 1 0/2 points In order to be used as a...

Q:

Duplication of data or the storing of the same data in more than one place Integrity B. Security C. Redundancy D. Attribute Ans c Structure that can store information about different categories of...

Q:

multiple choice 13. Which of the following statement is correct regarding internal control ? A) A well-designed and operated internal control environment should detect collusion perpetrated by two...

Q:

Estimate the theoretical fracture strength of a brittle material if it is known that fracture occurs by the propagation of an elliptically shaped surface crack of length 0.25 mm (0.01 in.) and having...

Q:

Consider a pair of random variables X, Y with constant joint density on the quadrilateral with vertices (0, 0), (2, 0), (2, 6), (0, 12). a. Find the variance of X, i.e., find Var X. b. Find the...

Q:

a raindrop hitting a lake makes a circular ripple. if the radius in centimeters grows as a function of time in minutes according to r ( t ) = 1 8 square root t + 3 find the area of the ripple as a...

Q:

CT Corp Comprehensive Question Canadian Tire Corporation, Limited ( Canadian Tire ) is a family of companies that includes a retail segment and a financial services division, among others. The retail...

Q:

a lack of participation in decision making and initiative by employees;

Q:

too much short-term, situational thinking, and a lack of long-term planning;

Q:

Exposure to market forces has focused attention on the cost of human resources as a high proportion of operating costs.