Delete statement - Study guides, Class notes & Summaries
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Py4e: Chapter 15 Questions and Answers 100% Pass
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Py4e: Chapter 15 Questions and 
 
Answers 100% Pass 
 
What is a cursor in database programming? 
A control structure that allows traversal over database records 
 
What is the purpose of the `sqlite3` library in Python? 
To interact with SQLite databases 
 
How do you connect to a SQLite database in Python? 
By using the `ct()` function 
 
What is an SQL table? 
A structure in a database that stores data in rows and columns 
 
How do you create a table in an SQLite database using Python? 
By ex...
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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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ISQS EXAM 1 – Mitchell Questions and Answers Graded A+
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ISQS EXAM 1 – Mitchell Questions and 
 
Answers Graded A+ 
 
What is the purpose of normalization in database design? 
A. To reduce data redundancy and improve data integrity 
 
Which type of relationship is represented by a "one-to-many" in a database? 
A. One record in the first table can have multiple related records in the second table 
 
What is the function of the SELECT statement in SQL? 
A. To retrieve data from a database table 
 
In relational databases, what is a primary key u...
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WGU D427 Practice Test with Answer Key 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 C170 Pre- Assessment (New 2024/ 2025 Update) Data Management Applications Exam| 100% Correct| Graded A
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WGU C170 Pre- Assessment (New 2024/ 2025 
Update) Data Management Applications 
Exam| 100% Correct| Graded A 
 
QUESTION 
 Which command creates a database only if it does not already exist? 
 
 
Answer: 
CREATE DATABASE IF NOT EXISTS db_name ; 
 
 
 
QUESTION 
 Refer to the given SQL statement. 
 
SELECT PRODNUM, PRODNAME 
FROM PRODUCT 
 
Which line should be added to the end of the statement to return the product numbers and 
product names for products that cost 20 dollars? 
 
 
Answer:...
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C++ Chapter 12 Questions and Answers Rated A+
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C++ Chapter 12 Questions and Answers 
 
Rated A+ 
 
What does the `main()` function do in a C++ program? 
It is the entry point where program execution begins 
 
What is a variable in C++? 
 
A container used to store data that can be changed during the program's execution 
 
What is the purpose of the `#include` directive in C++? 
It tells the preprocessor to include the contents of a file before compilation 
 
What is a data type in C++? 
A classification of data that tells the compiler how...
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WGU Course C170 - Data Management (Applications) Quizlet by Brian MacFarlane
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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
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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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CSCI 1 Chapter 9 Exam Questions and Answers All Correct
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CSCI 1 Chapter 9 Exam Questions and Answers All Correct 
 
Which of the following statements is NOT valid C++ code? 
 a)int ptr = &num1; 
 b)int ptr = int *num1; 
 c)float num1 = &ptr2; 
 d)All of these are valid 
 e)All of these are invalid - Answer- e)All of these are invalid 
 
Which of the following statements deletes memory that has been dynamically allocated for an array? 
 a)int array = delete memory; 
 b)int delete[ ]; 
 c)delete [] array; 
 d)new array = delete; 
 e)None of these - An...
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Quickbooks online questions and answers latest updated 2023
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Quickbooks online questions and answers latest updated 2023 
What lists can be imported from Excel spreadsheets, when setting up a QuickBooks online company? 
Chart of accounts, Customers, Products and Services, and Vendors 
 
 
 
Which of the following is TRUE regarding your chart of accounts, when setting up a new QuickBooks company? 
It is possible to add more accounts after starting a new company 
 
 
 
What company information does QuickBooks ask for when you first create a new QuickBooks o...
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