1970 − Dr. Edgar F. "Ted" Codd of IBM is known as the father of relational databases. He described a relational model for databases. 1974 − Structured Query Language appeared. 1978 − IBM worked to ...

This study guide covers the internal workings of a basic SQL SELECT statement in Oracle. We'll focus on how the query retrieves data from a table and how it determines which rows to select. The query ...

In this Microsoft SQL Server and JDBC tutorial, you'll learn how to connect to a Microsoft SQL Server in Java using JDBC. The steps are relatively straightforward: Each database is different, so ...

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 ...