EBK ORACLE 12C: SQL
3rd Edition
ISBN: 9781305465305
Author: CASTEEL
Publisher: YUZU
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Chapter 1, Problem 5MC
Program Description Answer
In an Entity-Relationship (E-R) model, a many-to-many relationship is represented by “a straight line with a crow’s foot at both ends”.
Hence, correct answer is option “C”.
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Which of the following symbols represents a many-to-many relationship in an E-R model?a. a straight lineb. a dashed linec. a straight line with a crow’s foot at both endsd. a straight line with a crow’s foot at one end
Which of the following symbols represents an optional relationship in an E-R model?a. a straight lineb. a dashed linec. a straight line with a crow’s foot at both endsd. a straight line with a crow’s foot at one end
Which of the following is not an E-R model relationship?a. some-to-manyb. one-to-onec. one-to-manyd. many-to-many
Chapter 1 Solutions
EBK ORACLE 12C: SQL
Ch. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Discuss the problems that can be caused by data...Ch. 1 - Explain the role of a primary key.Ch. 1 - Prob. 7RQCh. 1 - Prob. 8RQCh. 1 - What type of relationship can’t be stored in a...Ch. 1 - Identify at least three reasons an organization...
Ch. 1 - Prob. 1MCCh. 1 - Prob. 2MCCh. 1 - Prob. 3MCCh. 1 - Prob. 4MCCh. 1 - Prob. 5MCCh. 1 - Prob. 6MCCh. 1 - Prob. 7MCCh. 1 - Which of the following has no partial or...Ch. 1 - Prob. 9MCCh. 1 - Which of the following has no partial dependencies...Ch. 1 - Which of the following has no repeating groups but...Ch. 1 - Prob. 12MCCh. 1 - Prob. 13MCCh. 1 - A unique identifier for a data row that consists...Ch. 1 - Which of the following symbols represents an...Ch. 1 - Prob. 16MCCh. 1 - Which of the following represents a field in a...Ch. 1 - Which of the following defines a relationship in...Ch. 1 - When part of the data in a table depends on a...Ch. 1 - Which of the following is used to join data...Ch. 1 - Which tables and fields would you access to...Ch. 1 - Prob. 2HOACh. 1 - Prob. 3HOACh. 1 - Prob. 4HOACh. 1 - Access path A database table is composed of...Ch. 1 - Prob. 6HOACh. 1 - Prob. 7HOACh. 1 - Prob. 8HOACh. 1 - Prob. 9HOACh. 1 - Prob. 10HOA
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- What is used to indicate a weak relationship in an ERD in Crow’s Foot notation? Dashed line between entities Double rectangular box Solid line between entities Single rectangular boxarrow_forwardWhat is the degree of relationship?Give an example of a relationship of degree threearrow_forwardGive an example of one to one and one to many relationship?arrow_forward
- which rules apply to desigining table with less redundancy? a) Binary Relationship b) Reflective Relationship c) Weak entity d) Normal formarrow_forwardWhich of the following relationships does not fit the E-R model? some-to-many b. one-to-one c. one-to-many d. many-to-many a. some-to-many b. one-to-many c. one-to-many d. many-to-many d. many-toarrow_forwardWHAT IS THE RELATIONSHIP THIS TABLE ZERO TO MANY OPTIONAL ? ONE TO MANY ? ONE MANDATORY ? ONE TO ONE ? ONE ? ZERO TO ONE ? MANY ? MANY TO MANY ? ONE OPTIONAL TO MANY OPTIONAL ? ONE MANDATORY TO MANY OPTIONAL ? MANY)arrow_forward
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