Question: A view is updatable if: A . The from clause has more than one relations. B . The select clause contains aggregates. C . An

A view is updatable if:
A. The from clause has more than one relations.
B. The select clause contains aggregates.
C. An attribute of the base table is not null.
D. None of the above.

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 17 Which of the following statement is true? A. View is part of the logical model and is visible to a user as a virtual relation OB. View is not part of the logical model and is visible to a...

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:

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:

First visit HYPERLINK "http://www.tdan.com/view-articles/5174/" http://www.tdan.com/view-articles/5174/ and learn what data related business rules are. Business rules are precisely written and...

Q:

Write an SQL statement to create a table room with the attributes (roomNo,hotelNo,hotelName,address,city,type,price,floor,guestNo), specify that the attribute roomNo cannot be null, the attributes...

Q:

Write an SQL statement to create a table room with the attributes (roomNo,hotelNo,hotelName,address,city,type,price,floor,guestNo), specify that the attribute roomNo cannot be null, the attributes...

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:

16. The external model yields some advantages such as ______________ a. use of the database subsets to make application program development much simpler. b. use of the database subsets to make...

Q:

General Knowledge question 1) What is the most common type of DBMS Model ? a) Hierarchical b) Network c) Relational d) Object-Relational e) Object Oriented 2) DBMS systems have commands to look at...

Q:

USE THE DELPHIQUERYBUILDER TO ANSER THE FOLLOWING QUESTIONS based on the Kruger park database 1.1 QUESTION 1 Supply only the missing parts of the queries Write SINGLE line SQL statement that will:...

Q:

Solve the differential equation using an appropriate integrating factor. 1) y(2xy+1) dx-xdy=0 2) y(y-x) dx + x(y + x)dy=0

Q:

A lens system has two plano-convex lenses. Show that for minimum spherical aberration, the separation between the lenses should be equal to the difference in the focal lengths of the lenses.

Q:

Can you explain the basic principles of thermodynamics?

Q:

Fill in blanks in the following table and predict with reasons whether Au+ ion is stable in aqueous media at 25C \begin{tabular}{|l|l|l|} \hline Electrode Reaction & E/V & G/kJmol1 \\ \hline...

Q:

7. The main problem with imposing the socially optimal price (P = MC) on a monopoly is that the socially optimal price: LO12.7 a. May be so low that the regulated monopoly cant break even. b. May...

Q:

2. The MR curve of a perfectly competitive firm is horizontal. The MR curve of a monopoly firm is: LO12.3 a. Horizontal, too. c. Downsloping. b. Upsloping. d. It depends.

Q:

1. Which of the following could explain why a firm is a monopoly? Select one or more answers from the choices shown. LO12.2 a. Patents. d. Government licenses. b. Economies of scale. e. Downsloping...