There are several ways to implement data sources and you can
even build your databases from text files that are coming to your system. It is
important to note here that you can use the SQL Server Integration Services (SSIS)
provided to simplify your life by loading data from different databases and
other data sources into one single database instance of SQL Server. It is also
important to note that the text interface provides a great deal of flexibility
if you are dealing with heterogeneous systems to get data out. Please remember
that SSIS is outside the scope of this series. In our case, we are going to
deal simply with an SQL Server database as our source.