Introduction

We saw in the last chapter how many web applications are built around the concept of resources. An online store has products to sell. A social media application has people with accounts. Resource-oriented web applications therefore need to store these resources in some fashion - possibly as objects in some kind of collection, or possibly with a database.

Key Terms

Some key terms to learn in this chapter are:

• Database
• Relational Database
• Object-Oriented Database
• Document-Based Database
• Structured Query Language (SQL)
• Language Integrated Query (LINQ)
• Anonymous Types
• Extension Methods

Key Skills

The key skills to develop in this chapter are:

• Using LINQ to perform query operations on data sets
• Writing extension methods to provide new functionality to existing classes