Delete statement - Study guides, Class notes & Summaries

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...

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, ...

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...

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...

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:...

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...

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...

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...

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...

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...