Question: Why can total participation of an entity type in a relationship type also be referred to as existence dependency of that entity type in that

Why can total participation of an entity type in a relationship type also be referred to as existence dependency of that entity type in that relationship type?

Step by Step Solution

★★★★★

3.48 Rating (161 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Total participation occurs if in order to exist a... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

887-CS-DB (2088).docx

120 KBs Word File

Students Have Also Explored These Related Databases Questions!

What is the value of using role names to describe the participation of an entity type in a relationship type?

Consider the ER diagram shown in Figure 7.21 for part of a BANK database. Each bank can have multiple branches, and each branch can have multiple accounts and loans. (a) List the strong (nonweak)...

Consider the Presentation Layer ER diagram. a. Identify the base and weak entity types. What is (are) the unique identifier(s) of each entity type? Which unique identifiers are composite attributes?...

Homework Opportunity No . 6 Part I Use the ER diagram given below to answer the following questions: Which relationships exhibit: a . Total participation of each entity type b . Partial participation...

Q 3 ) From the ER Diagram given below, answer the following questions. a ) List all the weak entity type ( s ) and all of their partial key ( s ) respectively. [ 2 points ] b ) List all the...

2) Consider the following set of requirements for a pharmaceutical company. Patients are identified by an SSN, and their names, addresses, and ages must be recorded. Doctors are identified by an SSN....

Consider the following set of requirements for a pharmaceutical company. Patients are identified by an SSN, and their names, addresses, and ages must be recorded. Doctors are identified by an SSN....

*Produce an annotated list of at least 10 business relationship rules for the assigned NBD case. Include a reference to the case study section(s) that apply to each rule. *For each rule draw the...

home / study / engineering / computer science / computer science questions and answers / help create a coffee shop er diagram. help please will thumbs up! -the coffee shop serves food ... Question:...

Read the case study of Mountain View Community Hospital attached. Develop a conceptual database schema (i.e., ER diagram) for the hospital database using ER model. [NOTE] In the ER-diagram, (i)...

The records of the Mission Company show the following data for Item A: Balance, January 1 ...........................200 units @ $10 per unit The sales price for Item A was $ 15 per unit throughout...

Sarasota Corporation issues $530,000 of 14% bonds that are due in 8 years and pays interest semi-annually. At the time of issue, the market rate for such bonds is 12%. What is the issue price of the...

A respirasome consists of Complexes I, II , III, and IV . Complexes II , III, and IV Complexes I, II , and III. Compleves I, III, and IV .

Given P(A) = .10, P(B) = .12, P(C) = .21, P(A C) = .05, and P(B C) = .03, solve the following. a. P(A C) = b. P(B C) = c. If A and B are mutually exclusive, P(A B) =

Let the following relation schemas be given: R = (A, B, C) S = (D, E, F) Let relations r(R) and s(S) be given. Give an expression in SQL that is equivalent to each of the following queries. a. A(r)...

Let R = (A, B, C), and let r1 and r2 both be relations on schema R. Give an expression in SQL that is equivalent to each of the following queries. a. r1 r2 b. r1 r2 c. r1 r2 d. II AB(r1) 1 BC(r2)

Let R = (A, B) and S = (A, C), and let r(R) and s(S) be relations. Write an expression in SQL for each of the queries below: a. { | b ( r b = 17)} b. { | r

According to a leasing firm's reports, the mean number of miles driven annually in its leased cars is 13,480 miles with a standard deviation of 1240 miles. The company recently starting using new...

1. Fryer Inc. owns equipment for which it paid $90 million. At the end of 2021, it had accumulated depreciation on the equipment of $27 million. Due to adverse economic conditions, Fryer's management...

Information concerning a project is given in the table below. Indirect project costs amount to $250 per day. The company will incur a $100 per day penalty for each day the project lasts beyond day...