Things you can do
Build web and mobile applications for multiple data types
Support structured and unstructured data while storing business data with native support for relational data, XML, and spatial data. Add geographical information to business applications and build location-aware applications. Increase granularity of temporal data with date and time data types.
Embed lightweight database into basic desktop applications
SQL Server Express LocalDB is a lightweight deployment option for SQL Server Express with fewer prerequisites. This makes it ideal for developers who need an embedded SQL Server database for desktop applications or tools. LocalDB runs in-process with applications and not as a service.