In this tutorial, we will step through installing PostgreSQL, connecting to the database, loading some data, and running a variety of SQL queries. To cap it all off, we’ll execute a query ...

SQL is the leading language for developing and querying databases, but it has a few quirks. In my last article, I shared 7 SQL mistakes to avoid. Now, let’s take a look at 9 best practices for ...

Query federation is a way to make use of distributed data sources on the Web, including many SPARQL endpoints as well as relational databases. SWObjects makes use of mapping rules represented as ...