Alter table - Study guides, Class notes & Summaries
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WGU D426 V2 Exam
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The relationship (within the relation) that describes how the value of one attribute 
may be used to find the value of another attribute. 
Functional Dependency 
An attribute that can be used to find the value of another attribute in the relation. 
Determinant 
Value can be used to find the value of every other non-key attribute in the table. 
Unique and minimal. 
Candidate Key 
Define & manage database structures 
DDL 
Adding, deleting, and modifying data - Manipulates data stored in a database...
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WGU D426 (v2) Revised 2024
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WGU D426 (v2) Revised 2024 
 
 
The relationship that describes how one attribute's value can determine another's - ANSWER Functional Dependency 
 
 
 
An attribute determining the value of another attribute - ANSWER Determinant 
 
 
 
Unique and minimal attribute determining non-key attributes - ANSWER Candidate Key 
 
 
 
Defines and manages...
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PRE1 Questions with complete solution 2024
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PRE1 Questions with complete solution 2024 Data Management - Applications - D427 
 
Create a data type with a positive value 
UNSIGNED 
 
 
Designating a foreign key in CREATE TABLE statement 
FOREIGN KEY (ColumnName) 
REFERENCES Tablename(ColumnName), 
 
 
Command to add a column to an existing table 
ALTER TABLE TableName 
ADD COLUMN ColumnName DATATYPE; 
 
 
SQL statement to create a view name Myview that contains X, Y, Z columns from the Maintable table. 
 
CREATE VIEW Myview AS 
SELECT X, ...
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Oracle Database SQL Expert
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Question: 1 
168 
You need to load information about new customers from the NEW_CUST table into the tables 
CUST and CUST_SPECIAL. If a new customer has a credit limit greater than 10,000, then the 
details have to be inserted into CUST_SPECIAL. All new customer details have to be inserted 
into the CUST table. Which technique should be used to load the data most efficiently? 
A. external table 
B. the MERGE command 
C. the multitable INSERT command 
D. INSERT using WITH CHECK OPTION 
...
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WGU D427 Practice Test with Answer Key 2024.
- Exam (elaborations) • 23 pages • 2024
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WGU D427 Practice Test with Answer Key 2024. 
1. Seattle, WA 98111 
USA 
How many attributes are present in the address fragment? 
a. 1 
b. 2 
c. 3 
d. 4 
2. The Book table has the following columns: 
genre – varchar(20) 
pages – integer 
author_id – char(3) 
isbn_number – varchar(20) 
Which column should be designated at the primary key for the Book table? 
a. genre 
b. pages 
c. author_id 
d. isbn_number 
3. The Book table has the following columns: 
genre – varchar(20) 
pages – in...
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WGU D427 Practice Test with Answer Key 2024.
- Exam (elaborations) • 23 pages • 2024
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WGU D427 Practice Test with Answer Key 2024. 
 
1. Seattle, WA 98111 
USA 
How many attributes are present in the address fragment? 
a. 1 
b. 2 
c. 3 
d. 4 
2. The Book table has the following columns: 
genre – varchar(20) 
pages – integer 
author_id – char(3) 
isbn_number – varchar(20) 
Which column should be designated at the primary key for the Book table? 
a. genre 
b. pages 
c. author_id 
d. isbn_number 
3. The Book table has the following columns: 
genre – varchar(20) 
pages – ...
-
WGU D426 V2 EXAM QUESTIONS AND ANSWERS TOP GRADED 2024
- Exam (elaborations) • 22 pages • 2024
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The relationship (within the relation) that describes how the value of one attribute may be used to find the value of another attribute. 
Functional Dependency 
 
 
 
An attribute that can be used to find the value of another attribute in the relation. 
Determinant 
 
 
 
Value can be used to find the value of every other non-key attribute in the table. Unique and minimal. 
Candidate Key 
 
 
 
Define & manage database structures 
DDL 
 
 
 
Adding, deleting, and modifying data - Manipula...
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WGU Course C170 - Data Management (Applications) Quizlet by Brian MacFarlane
- Exam (elaborations) • 71 pages • 2024
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WGU Course C170 - Data Management (Applications) Quizlet by Brian MacFarlane 
A salesperson is authorized to sell many products and a product can be sold by many salespersons. 
 
Which kind of binary relationship does this scenario describe? 
 
A One-to-one 
B One-to-many 
C One-to-one binary 
D Many-to-many 
D 
 
 
Which kind of relationship is displayed in this entity-relationship diagram? 
 
A Many-to-many unary 
B Many-to-many binary 
C One-to-one unary 
D One-to-one binary 
A 
 
 
Which kin...
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WGU Course C170 - Data Management (Applications) Quizlet by Brian MacFarlane
- Exam (elaborations) • 71 pages • 2024
- Available in package deal
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- $17.00
- + learn more
WGU Course C170 - Data Management (Applications) Quizlet by Brian MacFarlane 
A salesperson is authorized to sell many products and a product can be sold by many salespersons. 
 
Which kind of binary relationship does this scenario describe? 
 
A One-to-one 
B One-to-many 
C One-to-one binary 
D Many-to-many 
D 
 
 
Which kind of relationship is displayed in this entity-relationship diagram? 
 
A Many-to-many unary 
B Many-to-many binary 
C One-to-one unary 
D One-to-one binary 
A 
 
 
Which kin...
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WGU D427 Practice Test with Answer Key 2024.
- Exam (elaborations) • 23 pages • 2024
-
- $13.99
- + learn more
WGU D427 Practice Test with Answer Key 2024. 
1. Seattle, WA 98111 
USA 
How many attributes are present in the address fragment? 
a. 1 
b. 2 
c. 3 
d. 4 
2. The Book table has the following columns: 
genre – varchar(20) 
pages – integer 
author_id – char(3) 
isbn_number – varchar(20) 
Which column should be designated at the primary key for the Book table? 
a. genre 
b. pages 
c. author_id 
d. isbn_number 
3. The Book table has the following columns: 
genre – varchar(20) 
pages – in...
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