Question: 1. Consider the following relational schema for this section: R1(A1, A2, A3) 91, A2, A R2(B1, B2) Domains of all attributes are STRINGS. Primary keys

1. Consider the following relational schema for this section: R1(A1, A2,

1. Consider the following relational schema for this section: R1(A1, A2, A3) 91, A2, A R2(B1, B2) Domains of all attributes are STRINGS. Primary keys are underlined. Referential Integrity Constaints are represented by arrows. For each item below, specify whether it is true (T), or false(F). If it is true, shortly explain why. if it is false, shortly explain why. (a) A1 attribute is a Candidate Key of the R1 relation. - 1 point (b) B1 attribute is the primary key of the relation R2. - 1 point (c) If "d" is an Al attribute value in R1, a tuple with Bl attribute value of "d" has to exist in R2. - 2 points LILLE

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!

Assume that you are either the staffing professional in the department or the hiring manager of a work unit. Explain why it is so important to represent the organizations interests (see Exhibit 1.8)....

II. Consider the following relational schema for this section: R1(A1, A2, A3) R2(B1, B2) Domains of all attributes are STRINGs. Primary keys are underlined. Referential Integrity Constaints are...

I have time limitation please solve it step by step and readable in 1 hour than I will thumbs up you +1 11. Consider the following relational schema for this section: R1(41, A2, A3) R2(B1, B2)...

11. Consider the following relational schema for this section: R1(41, A2, A3) R2(B1, B2) Domains of all attributes are STRINGs. Primary keys are underlined. Referential Integrity Constaints are...

(a) A1 attribute is a Candidate Key of the R1 relation. b) B1 attribute is the Primary Key of the relation R2. (c) if d is an A1 attribute value in R1, a tuple with B1 attribute value of d has to...

R1(A1, A2, A3) RIQLA2 A R2(B1, B2) Domains of all attributes are STRINGS. Primary keys are underlined. Referential Integrity Constaints are represented by arrows. For each item below, specify whether...

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...

The following exercises concern the relational schema R = ABCDEG and instance r of this schema depicted in Table 1 below. ABCDEG a1 b1 c1 d1 e1 g1 a2 b2 c1 d2 e2 g2 a2 b2 c1 d2 e2 g3 a3 b3 c3 d2 e3...

Select ALL that are CORRECT. Given a relational model and the domains of attributes, you are asked to review an SQL script that creates a database for this model that has to guarantee data integrity....

Developments in Technology Light is incident from air on the end face of a multimode optical fibre at angle of incidence as shown below. n n 1 2 The refractive indices of the core and cladding are...

Macon Publishing House produces consumer magazines. The house and home division, which sells home-improvement and home-decorating magazines, has seen a 20% reduction in operating income over the past...

What does the difference between the totals of the Income Statement columns represent? What does the difference between the Balance Sheet column totals represent?

EXERCISE 10-15. Performance Report Prepare a performance report for Bookbinder Company using the budget information from Exercise 14 and the following performance information. During the period,...

QUESTION 1 Sparrow, Inc. produces birdseed that it sells to regional markets. Susan, the accountant at Sparrow, is evaluating the impact of Activity-Based Costing (ABC) on several activities for the...

Explain the service recovery paradox.

Know the core strategies of the Wheel of Loyalty that explain how to develop a loyal customer base.

Understand different leadership styles, the importance of role modeling and focusing the entire organization on the frontline.