The Salesforce Platform allows developers to build enterprise applications using Visualforce, Apex and SOQL. To ensure that your applications perform and scale as your business grows, you'll want to write efficient and selective queries. The Force.com query optimizer uses several algorithms to determine the best SQL to generate from your SOQL. Some factors involved in this process include multitenancy, metadata and indexes.
Watch this webinar to:
Get an overview of multitenancy and metadata
Understand how to write selective and scalable SOQL queries
Learn how the Force.com query optimizer converts SOQL to SQL
See examples of the performance impact of indexes
Find out how skinny tables work