Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Using the SELECT FOR UPDATE statement applies a row-level lock on that row and waits for the previous instance to complete before going to the next.”

A block of code is set as follows:

INSERT INTO Accounts (AccountID, Balance)
VALUES (1, 100.00);

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

CREATE TABLE Accounts (
    AccountID int,
    CustomerName varchar(100),
    Balance decimal(10, 2) CHECK (Balance >= 0)
);

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “To access the Data Analysis GPT, click on Explore in the sidebar and select Data Analysis from the list of GPTs available.”

Tips or important notes

Appear like this.