How does LINQ impact database transaction boundaries in real applications?

LINQ does not manage transactions directly; transaction boundaries are controlled by the database context or unit of work.

LINQ queries themselves are stateless expressions. In ORM-based systems like EF Core, transactions are handled by DbContext or explicit transaction scopes. LINQ queries executed inside a transaction participate in that transaction only if they are part of the same DbContext lifecycle. A common misunderstanding is assuming that LINQ chaining implies transactional grouping. In reality, only write operations (Insert/Update/Delete) are affected by transactions, while SELECT queries are simply executed within the current isolation level.…