Here is a simple example of creating a database in SQL Server.
USER master;
GO
CREATE DATABASE MyDatabase
  ON (
        Name = N'MyDatabase',
        FileName = N'e:\db\MyDatabase.mdf',
        Size = 10MB,
        maxsize = unlimited,
        filegrowth = 1GB
      )
  LOG ON
      (
        Name = N'MyDatabaseLog',
        FileName = N't:\tl\MyDatabase.ldf',
        Size = 10MB,
        maxsize = unlimited,
        filegrowth = 1GB
      )
You will typically see sizes referenced in units of KB, MB, GB or TB.
You can drop a database using the following type of command.
DROP DATABASE MyDatabase
For more information see: