Microsoft on 31st March 2016 announced the free availability of Developer Edition of SQL Server, currently 2014. The Developer Edition is meant for development and testing only, and not for production environments or for use with production data.
With SQL Server 2014 Developer edition developers can build any kind of application on top of SQL Server. It includes all the functionality of Enterprise edition, but is licensed for use as a development and test system, not as a production server.
So, with this edition you are getting the Database Engine as well as DW/BI capabilities ( i.e. SSIS /AS /RS) for free 🙂
This is a very good news for Developers, as till now the SQL Server Express edition used to be the free database for entry-level development, which has lot of limitations like:
1. Only Database Engine, no DW/BI suit (absence of SSIS/RS/AS).
2. Max size of a DataBase is set to 10GB (but you can create multiple databases)
3. No SQL Agent
4. Single CPU utilization
5. Max 1 GB RAM allocation
6. Max 16 number of instances per server
Hence this is a very good deal that you can now get full featured suit of SQL Server with Database Engine as well as with all DW/BI capabilities for free to play, develop and learn with.