Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Sep 08, 2024

If E 1 and E 2 are relational algebra expressions, then which of the following is NOT a relational algebra expression? a . projection b

If E

1

and E

2

are relational algebra expressions, then which of the following is NOT a relational

algebra expression?

.

projection

.

selection

.

union

.

join

.

intersection

Step by Step Solution

There are 3 Steps involved in it

Step: 1

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

Step: 3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Web Database Development Step By Step

Authors: Jim Buyens

1st Edition

0735609667, 978-0735609662

More Books

Students also viewed these Databases questions

Question

★★★★★

The position of a mass oscillating on a spring is given by x = (7.8 cm) cos[2t/(0.68 s)]. (a) What is the frequency of this motion? (b) When is the mass first at the position x = -7.8 cm?

Answered: 1 week ago

Question

★★★★★

Discuss how lifestyle choices are determined by status, role-playing and show-off issues.

Answered: 1 week ago

Question

★★★★★

=+ (a) Let H, = UT_ _. (S @ 0,), so that H ,, 1 G. Show that the sets H ,, @ 0(2n + 1)e are disjoint for different v.

Answered: 1 week ago

Question

★★★★★

Universal Bank pays 7% interest, compounded annually, on time deposits. Regional Bank pays 6% interest, compounded quarterly. a. Based on effective interest rates, in which bank would you prefer to...

Answered: 1 week ago

Question

★★★★★

Question2 You have a choice between the following three investments: A bank bill. The bill was issued as a 90 day bank bill 35 days ago. It has a face value of $1000 and is currently trading at a...

Answered: 1 week ago

Question

★★★★★

In Year 1, Jay Company expects to sell 2,243 units at $110 per unit.Sales are expected to increase 25% each year for years 2-4.The unit sales price will remain the same.Labor is 23% of sales,...

Answered: 1 week ago

Question

★★★★★

When a company runs an add stressing how their product is vastly better than the other available options, the marketer is trying to what?

Answered: 1 week ago

Question

★★★★★

1. Are there any plugins to BPMN models inKNIME? Explain. 2. Examine the similarities of workflows to BPMN processes. 3. Two modeling elements/concepts in KNIME are nodes and data. Are the...

Answered: 1 week ago

Question

★★★★★

Which are the key benefits of SAP S/4HANA Cloud for receivables management?Which of the capabilities below are included in SAP S/4HANA Cloud receivables management? Manage international trade Perform...

Answered: 1 week ago

Question

★★★★★

If your team gets together as a group to inform management that they need to be able to control the thermostat in the office to have a comfortable work environment, or else they will not be able to...

Answered: 1 week ago

Question

★★★★★

How are digital technologies changing family life? 2.) How are digital technologies changing the following social institutions: politics, education, the economy, and religion to make them better and...

Answered: 1 week ago

Question

★★★★★

Review Figure 16.9, a scannable rsum illustrated in this chapter, and make a list of words that you believe to be keywords related to property management and marketing. (Objective 4)

Answered: 1 week ago

Question

★★★★★

Ethics. Teamwork. Technology. Read the scenario below; partner with a classmate to discuss the ethical questions following the scenario.Working together, write an e-mail to your instructor explaining...

Answered: 1 week ago

Question

★★★★★

Technology. Access job opportunities on the Internet for positions related to your career objective. Assess the job opportunities in terms of your interest in them.Write a letter to your instructor...

Answered: 1 week ago

Previous Question Next Question