Final answer:
In LINQ queries, one can use lambda expressions, delegates in .NET CLR, and LINQ query syntax. Java's query structure is not directly applicable as LINQ is specific to the .NET framework.
Step-by-step explanation:
When working with LINQ (Language Integrated Query), there are several types of expressions that can be used to formulate queries against data sources. The types of expressions that can be used in a LINQ query include:
- Lambda expressions - These are anonymous functions that can contain expressions and statements, and can be used to create inline processing steps in LINQ queries.
- Delegates in .NET CLR - Delegates are used to reference methods with a particular parameter list and return type, acting as a pointer to a function and can be used in LINQ to define criteria or actions.
- LINQ query syntax - A structured syntax that is similar to SQL which allows querying data in a readable form. It is integrated into C# or VB.NET programming languages.
However, Java's query structure is not applicable directly in LINQ queries as LINQ is a feature of the .NET framework and is not integrated with Java.