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: "Column names such as PatientID, Patient_FirstName, and PostalCode would already render it more readable."

A block of code is set as follows:

CREATE TABLE [dbo].[OrderDetail]
(
OrderID      INT NOT NULL,
ProductID    INT NOT NULL,
UnitPrice    MONEY NOT NULL,
Quantity     SMALLINT NOT NULL,
Discount     NUMERIC(5, 4) NOT NULL
);

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

[default]
exten => s,1,Dial(Zap/1|30)
exten => s,2,Voicemail(u100)
exten => s,102,Voicemail(b100)
exten => i,1,Voicemail(s0)

Any command-line input or output is written as follows:

$ mkdir css
$ cd css

Bold: Indicates a new term, an important word, or words that you see on screen. For instance, words in menus or dialog boxes appear in bold. Here is an example: "Click, in Azure Data Studio, on the New Query button to open a new query file."

Tips or important notes

Appear like this.