EBK ORACLE 12C: SQL
3rd Edition
ISBN: 9781305465305
Author: CASTEEL
Publisher: YUZU
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Textbook Question
Chapter 1, Problem 11MC
Which of the following has no repeating groups but can contain partial or transitive dependencies?
- a. unnormalized data
- b. 1NF
- c. 2NF
- d. 3NF
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You have a frequent itemset I={football, cricket, swimming, climbing} that contains 4 items. What does it mean when you say that I is a maximal itemset?
a.
There is no other frequent itemset for the given dataset
b.
a) There is no superset of I that is a frequent itemset
c.
The set {cricket, swimming, climbing} is not frequent
d.
All frequent itemsets have 4 items
Look at the command for the Document Database below. What does it do?
db.superheroes.insert{
{
collection: “people”, forename: “Bruce”, surname: “Banner”, age: 40
}
};
a.
It deletes a record for Bruce Banner
b.
a) It inserts a record for Bruce Banner in the collection superheroes
c.
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d.
It creates a new collection for Bruce Banner in the collection people
Which of the following are true about primary keys? SELECT ALL THAT APPLY.
A) They must reference one or more columns in a single table.
B) They are usually implemented using an index.
C) They guarantee that no two rows in a table have duplicate primary key values.
D) They must be defined for every database table.
Which of the keys below are not supported by a relational database?
a.
Foreign keys
b.
Composite keys
c.
Dynamic keys
d.
Primary keys
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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