Question: Which statement is correct? a. In the relational model, the tuple constructor can only be used on atomic values and the set constructor can only

Which statement is correct?

a. In the relational model, the tuple constructor can only be used on atomic values and the set constructor can only be used on tuples.

b. In the relational model, the tuple constructor allows defining composite attribute types.

c. In the relational model, the set constructor allows defining multivalued attribute types.

d. In the relational model, the tuple and set constructor can be used in a nested way.

Step by Step Solution

★★★★★

3.51 Rating (148 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

d In the relational model the tuple and set construc... View full answer

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 Principles Of Database Management Questions!

Q:

Suppose that a learning algorithm is trying to find a consistent hypothesis when the classifications of examples are actually random. There are u Boolean attributes, and examples are drawn uniformly...

Q:

Question 1 A constructor is a special kind of member function. It isautomatically called when an object of that class is declared. True False Question 2 A constructor is always named construct with...

Q:

Which statement is correct with respect to marginal and average tax rates under a progressive tax structure? -For most taxpayers, the average tax rate is larger than the marginal tax rate....

Q:

Do some amendment and enhance the given research paper: Table of Content Abstract..3 Action Research.4 Research Methodology and Design...5 Literature Review: NoSQL Database7 Proposal.7 Iteration 1..8...

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:

Lesson 12 Quiz (Show/Explain all Work) IST 230 Relations on Sets, Databases 1. Let A = {0, 1, 2, 3, 4, 5, 6, 7, 8} and B = {1, 2, 3, 4, 5, 6, 7, 8}. Now let R be a binary relation R from A to B such...

Q:

Problem 3 (1 point each, total 15 points) 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, data...

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:

5. In the Relational Data Model, the NULL value corresponds to? a) unknown value. b) missing value c) empty (space) d) 0 (zero) value e) (a) and (b) f) (a), (b) and (c) g) (a), (b), (c) and (d) 6....

Q:

6.1. How do the relations (tables) in SQL differ from the relations defined formally in Chapter 3? Discuss the other differences in terminology. Why does SQL allow duplicate tuples in a table or in a...

Q:

A creative engineer suggests structuring the TLB so that not all the bits of the presented address need match to result in a hit. Suggest how this might be achieved, and what might be the costs and...

Q:

Yorkville Fertilizer Co. owns the following assets at the balance sheet date. Cash in bank savings account ........$ 6,000 Cash on hand ............... 850 Cash refund due from the IRS ....... 1,000...

Q:

Finding area for all (please show work) 1. To the right of z= -3.16 area =? 2. To the left of z= 1.365 3. To the right of z=3.25 4. To the right of z=1.615 5. Between z= -1.53 and z=0 6. Between z=...

Q:

Calculate the 2 0 2 4 depreciation for nonresidential real property costing $ 2 1 , 0 0 0 , 0 0 0 put in service on 2 / 1 6 / 1 9 9 3 .

Q:

What does lifestyle mean?? lPO05

Q:

There are only two stations, A and B, in a bus 1-persistence CSMA/CD network with T p = 25.6 μs and T fr = 51.2 μs. Station A has a frame to send to station B. The frame...

Q:

Explain why collision is an issue in random access protocols but not in controlled access protocols.

Q:

To understand why we need to have a minimum frame size T fr = 2 T p in a CDMA/CD network, assume we have a bus network with only two stations, A and B, in which T fr = 40 s and T p = 25 s. Station A...

Q:

BDJ Co. wants to issue new 19-year bonds for some much-needed expansion projects. The company currently has 9.8 percent coupon bonds on the market that sell for $1,138, make semiannual payments, and...

Q:

QUESTION 1 ( a ) A three - degree - of - freedom system is shown in Figure Q 1 . Finure 1 where k = 4 8 N m , m = 3 k g , F 1 = F 2 = 5 c o s 2 t N , F 3 = 0 N Knowing that the natural frequencies...

Q:

List the strong entity types on the er ER diagram