Question: Select all that apply: According to ER Model, an Entity Set can not have more than one Primary Key, and can not have less than

Select all that apply:
According to ER Model, an Entity Set can not have more than one Primary Key, and can not have less than one Primary Key
A Primary key can be composite, then all the component attributes will be marked with underline in ERD.
A Primary key can only be singular attribute, so there can only be one single attribute can be marked with underline in ERD.
A Composite key is a key that consists of two or more attributes.

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:

Which of the following are true about ER diagrams? Select all that apply. Group of answer choices Every entity set must have at least one attribute marked as a key Every relationship set must have at...

Q:

9. The following information is required in the ward computer management system of a hospital: Department: Department name, department address, department telephone Ward: ward number, bed number,...

Q:

dations of several key ratios for Cragston Star Products. The primary purpose of this information is to understand the client's business and assess the risk of financial failure, but ey ration) X...

Q:

Project Goal: This project aims to provide hands - on experience in designing, implementing, and managing a relational database system for a small library. The system will manage a diverse collection...

Q:

1. Using Dia, draw the ER diagrams to represent the relationship type suggested by each of the following scenarios. You do not need to include any attributes in your ER diagrams, only the entity type...

Q:

Model ER Consider the following information about the Bank database. - Each bank has a unique name. - Each bank can have many branches. - Each branch has a number, name, address composed by number,...

Q:

1. A foreign key can make reference to ) A. an attribute that is a primary key of another table B. an attribute tha table C. both A and B D. neither A nor B t is a primary key of the same 2.A...

Q:

Using ER Assistant (recommended) or Visio, create an ER diagram (ERD) that has at least 5 entities but no more than 6 entities. Each entity must have a minimum of 5 attributes that full describe that...

Q:

Project Overview The goal of the project is provide realistic experience in the conceptual design, logical design, implementation , operation and maintenance of a small relational database using the...

Q:

Project Overview The goal of the project is provide realistic experience in the conceptual design, logical design, implementation, operation and maintenance of a small relational database using the...

Q:

Many changes in human rights law in the United States have occurred only because somebody broke the law, was convicted, and then appealed her case. Rosa Parks, an African-American who died in 2006,...

Q:

old b goll, do Determine the consumer surplus for widgets when Pw = 4 and PG = 2. |CS= 11. Jonald Determine the cross-price elasticity of demand for widgets with respect to the price of gadgets when...

Q:

Bad debts Recovered $ 1 , 0 0 0 . It will be Answer: a . Credited to Bad debts A / c b . Credited to debtor s personal A / c c . Debited to creditor s personal A / c d . Credited to bad debts...

Q:

CT Corp Comprehensive Question Canadian Tire Corporation, Limited (Canadian Tire) is a family of companies that includes a retail segment and a financial services division, among others. The retail...

Q:

Discuss what role the government has in the area of executive pay. Ensure you update yourself on the latest developments in this area before answering this question.

Q:

Consider the advantages and diffi culties of using the bank competency form ( Figure 5.6 ) from the viewpoint of the manager and the person being appraised.

Q:

In the Meteor case study, what would be the outcomes of the new pay system that would make employees very unhappy with the new system?