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: “Create the new database using the executor role. We named it PORTFOLIO_TRACKING.”

A block of code is set as follows:

CREATE TABLE ORDERS ( 
   ORDER_ID NUMBER, 
   CUSTOMER_CODE TEXT, 
   TOTAL_AMOUNT FLOAT, 
   ORDER_DATE DATE, 
   CURRENCY TEXT DEFAULT 'EUR' 
); 

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 VIEW BIG_ORDERS AS 
SELECT * FROM ORDERS 
WHERE TOTAL_AMOUNT > 1000;

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 onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Select System info from the Administration panel.”

Tips or important notes

Appear like this.