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    Guided course · Data Access in .NET

    SQL Server for .NET Developers: back to the course

    Module 3 · Transactions and Concurrency · Lesson 9 of 15

    Isolation Levels in Practice: Locking READ COMMITTED, NOLOCK, RCSI, SNAPSHOT and SERIALIZABLE

    18 min readTechInterviewNotes Editorial TeamUpdated 13 Oct 2026Save

    This lesson comes with Full Access

    Its text, video and cheat sheet open with Full Access. This course's free lessons open without an account. Start with How SQL Server Stores a Table: Heaps, Clustered Indexes and B+ Trees.

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