MS SQL DatabaseMSSQL is a database offered by Microsoft. This is not a free database but available for developers for testing.
Many web applications, data centers etc uses MSSQL database.
You can buy MSSQL database. For testing and developing download MSSQL 2008 R2 Express edition for free. SQL Server 2008 R2 180 days trail pack can be downloaded. Visit Microsoft MSSQL website for more details.
You can download the online book on MSSQL Server 2008
Licenses for use.
To understand different types of Licenses and what is best for you, visit or download this PDF file on Licenses from here
Create Tables , checking records, displaying records etc