The following is a list of MySQL statements and clauses related to database and table schema, in alphabetical order. To understand how this book presents SQL syntax and describes SQL statements, as well as for information related to examples, please see the introduction to Part II. Many of the examples in this particular chapter involve the activities of the departments of a fictitious company: its human resources department and employee data, its sales department and client contact information, and its internal IT department with user work requests.