Question: Suppose that field 1 is a foreign key in relation A referencing relation B . Which of the following must be true? field 1 is

Suppose that field1 is a foreign key in relation A referencing relation B. Which of the following must be true?
field 1 is present only in relation B
All values that appear in field1 in B must appear in field 1 in A
field1 is present only in relation A
All values that appear in field 1 in A must appear in field1 in B
Suppose that field1 is a foreign key in relation A referencing

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:

Assume that K is a foreign key from relation A referencing relation B , which is the following is true? For every tuple x in B , there is a tuple y in A such that x [ K ] = y [ K ] . For every tuple...

Q:

s1 educated (SSE) student for every three public school educated (PSE) students. Reasoning that students are not very dissimilar from threads, he suggests the following entry and exit routines be...

Q:

Please answer the above two questions. Thanks 3. Suppose we start with the following relation-schema declaration: (1) (2) (3) (4) CREATE TABLE Emps ( id INT SSNO INT name CHAR (20) managerID INT The...

Q:

The employee is table, the best candidate for primary key is Select one: a. Department ID b. Employee hiredate c. Employee ID d. Employee salary Question 2 A primary key can be composed of more than...

Q:

have no time , Thanks for solve, i'll upvote it Please answer the following questions. 1. In a database, there are values a data element can take, and there are values it cannot take. In other words,...

Q:

Consider the following relational schema: Student(stdNo, firstName, lastName, eMail) Course(code, name, credits) WhenOffered(course, semester, year, examiner) Staff(staffID, name, birth-date,...

Q:

1 5 points An array (range) of cells across a column in Microsoft Excel would be considered which of the following terms under the data hierarchy? Data field Database File Record 2 5 points A...

Q:

Question 1 [4 points) Is the following statement true or false? Ethics have nothing to do with information systems. If} True Iii:1 False Question 2 [4 points) Is the following statement true or...

Q:

Consider the following database schema and example instance: ingredient recine fooditem stock Hints: - Underlined attribute form the primary key of a relation - The attribute recipe of relation...

Q:

Need help to fill in the following questions based on normalisation Examine the relation given below which contains data about students enrolled in various courses during a specific year. Carefully...

Q:

Milo is planning to rent out Segway Personal Transporters near a popular park in Vancouver for 90 days this summer. He purchased three Segways for $6500 each. The Segways are battery-powered electric...

Q:

Explain whether or not these structures represent resonance structures? :0 H a) CH=C H :-H b) CH=C H and H CH-C and CH-C H 0-H H c) CHCH=CH-CH and CHCH-CH=CH

Q:

Acquire Corporation is considering the acquisition of Targeted Corporation. Acquire has 8 4 5 , 0 0 0 , 0 0 0 shares of stock, with earnings per share of $ 1 0 . 5 0 and a market price per share of $...

Q:

During periods of falling prices, a perpetual inventory system would result in the same dollar amount of Cost of Goods Sold as a periodic inventory system under which of the following inventory cost...

Q:

Select a staff function in a given organizationHR, finance, information systems, sales, marketing, purchasing, maintenance, safety, logistics, etc.and assess the percentage of time that is currently...

Q:

What are examples of leadership selection processes that are designed to produce a diverse set of next-generation leaders, as McGregor recommends, rather than selecting leaders that just fit within a...

Q:

When McGregor urges us to attend to the climate, soil, and cultivation methods for management development, what is he referring to? Why does he favor this agricultural model over a manufacturing...