by Graham | Jan 27, 2017 | E-Quip AM, Miscellaneous
If you haven’t already, it is strongly recommended that you read this blog article about groups & permissions before you look into group footprints. Just to recap, a footprint defines the parts of the database that a group of users can see. The “Hospital A”... by Graham | Jan 27, 2017 | Miscellaneous
You may have come across the series of articles about configuring e-Quip using the Role Manager. This is a really big subject and even when tackled in small chunks the articles are tending to become long which might give the impression that this is more complex than... by Graham | Jan 5, 2017 | A Developer's Day
At last! My original intention was to write an article about the difference between relational calculus and relational algebra. In order to get here we needed to see what databases looked like before the relational model and what the relational model actually means.... by Graham | Jan 5, 2017 | A Developer's Day
The first part of this article discussed what databases looked like before Codd’s seminal paper in 1969 introduced the relation model. This post describes what the relational model actually is. By the way, the last article gave some examples from non-relational... by Graham | Jan 5, 2017 | A Developer's Day, E-Quip AM
The other day I came across a forum on the web and spotted a post by someone who wanted to know the difference between relational calculus and relational algebra. As happens so often on the web, all of the responses were written by people who had virtually no idea...