Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Expert Solution & Answer
Chapter 1, Problem 4MC
Program Description Answer
“Some-to-many” is not an E-R model relationship.
Hence, correct answer is option “A”.
Expert Solution & Answer
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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
What is Concept Map? Explain your answer.
Identify the three generic types of models.
Chapter 1 Solutions
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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Similar questions
- It's possible to have a main key and a candidate key for the same characteristic.arrow_forwardIt is important to identify and describe the loT model reference model. Is it possible to write the four tiers of the reference model's connections?arrow_forwardE-R model is an acronym for this. Encircle the correct choice. a. Entity reference model b. Event reaction model c. Entity-Relationship modelarrow_forward
- What is a model, and why do models matterarrow_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_forwardAn entity in A is associated with at most one entity in B. An entity in B, however, can be associated with any number (zero or more) of entities in A. What is the cardinality ratio? a. one to many b. many to one c. one to one d. many to manyarrow_forward
- How can you tell if a model meets the requirements for proportionality and additivity?arrow_forwardQuestion: What is the anticipated modeling approach and what is the reason to choose it for any model. Note: Please need a short answer in 2/3 sentences.arrow_forwardSuppose you are working within the framework of the conceptual model in Figure Q4.5. FIGURE Q4.5 THE CONCEPTUAL MODEL FOR QUESTION 5arrow_forward
- Explain sample size and training/testing a model.arrow_forwarda. Draw ER- notation for the given elements of ER-Model. 1. Entities a. Strong Entity b. Weak Entity c. Associative Entity 2. Relationship Degree a. Unary b. Binary c. Temary 3. Relationship Cardinality a. Mandatory One b. Mandatory Many c. Optional One d. Optional Manyarrow_forward
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