Entry-level, free database that is ideal for building small data-driven applications up to 10 GB of maximum disk size.
Do you need to embed SQL Server Express into an application? LocalDB is a lightweight version of Express that has all its programmability features yet runs in user mode and has a fast, zero-configuration installation. LocalDB does not accept remote connections, and cannot be administered remotely.
Experience the full feature set of SQL Server Express. This package contains the Database Engine, Reporting Services, and Full Text Search features.
This is the core Express database server, and includes the Database Engine feature only. Use this if you need a lightweight download and install, need to accept remote connections or administer remotely, and do not need the Reporting Services or Full Text Search features.