Inthis chapter, you will
Learn more about tables
See how to create and use sequences; a sequence generates a series of numbers
Explore how to create and use indexes; an index can improve the performance of queries
Learn how to create and use views, which are predefined queries on one or more tables; among other benefits, views allow you to hide complexity from a user , and implement another layer of security by only allowing a view to access a limited set of data in the tables
Let s plunge in and examine tables.