Question: QUESTION 1 0 Th says that a primary key cannot be null: Entity integrity rule Referential integrity rule Primary key rule Null key rule

QUESTION 10
Th
says that a primary key cannot be null:
Entity integrity rule
Referential integrity rule
Primary key rule
Null key rule
QUESTION 10 Th says that a primary key cannot be null:

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:

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:

In a well-structured database, the constraint that ensures the consistency of the data is known as the O entity integrity rule. O referential integrity rule. O unique primary key rule. O foreign key...

Q:

I. PROBLEMS: 1. (40 pts=5 x 10 pts) Consider that the following update operations are applied to the COMPANY relational database schema (Figure 3.7 on p. 75 of the textbook "Fundamentals of Database...

Q:

3) Given the two tables of records below, where the foreign key in Table B refers to records of table A. Identify and briefly explain the record(s) that violate(s) the constraint of (a) the entity...

Q:

3) Given the two tables of records below, where the foreign key in Table B refers to records of table A. Identify and briefly explain the record(s) that violate(s) the constraint of (a) the entity...

Q:

The entity integrity rule states that: Question 1 0 options: A ) referential integrity must be maintained across all entities. B ) a primary key must have only one attribute. C ) no primary key...

Q:

3.SCHOLARSHIP (ScholarshipNo, ScholarshipName, DonorName) STUDENT (StudentID, StudentName, ProgrammeCode) AWARD (ScholarshipNo, StudentID, AwardAmount, AwardDate) (1) Describe how the Entity...

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:

QUESTION 16 8-4 question 1 Create an ERD based on the following Summit Sporting Goods scenario. Be sure to follow drawing conventions for readability and clarity "I'm a manager of a sporting-goods...

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:

Write about the issue of Google strategy-the way of conversation with their public external and internal environment. For this task you should search what is the priorities of the principles and what...

Q:

Based on the periodic table, sort the resulting ions according to size related to the parent atom. 10 Question (1 point) Based on the periodic table, sort the resulting ions according to size related...

Q:

Intangible assets are not listed on the balance sheet because they do not have physical substance. True False

Q:

What is the payback period on the proposed phone app for a favorite sports team? The estimated cash flows appear below. (note: payback is in years; round to 2 decimals) Year O cash flow = -90,000...

Q:

Distinguish between primary and secondary information sources. Give an example of each. (Objective 3)

Q:

Mary Lous Family Cooking has been operating for 25 years. Several chain restaurants have moved into the area resulting in a highly competitive market.Mary Lous currently owes an $18,750 balance for...

Q:

While working as part of a research team, one of your coworkers tells you that failing to cite sources doesnt constitute plagiarism if youre writing an internal report. Do you agree or disagree? Why?...