Even More Fun with Database Keys

Over the last few posts, we’ve went over Primary Keys, Foreign Keys, Candidate Keys, and Alternate Keys. Most of y’all are probably thinking – that’s too many keys already! Why do we need even more keys? Well, that’s because we sometimes need different ways to describe what we’ve got going on. Of the four different…… Continue reading Even More Fun with Database Keys

More Fun with Database Keys

If you’ve been following along with some of our previous blog posts, you’ll know that we’ve discussed some of the more used keys when dealing with databases. Lest you forget, we talked about keys in these two blog posts: Primary Keys – Good and BadForeign Keys – Are they worth it? Now, we can talk…… Continue reading More Fun with Database Keys

Reverse Engineering an ERD

One of the items you may have seen on the tools that you were using on Set up for an ERD is that you were asked if you wanted to reverse engineer it. Do not let the term “Reverse Engineer” confuse or scare you. Reverse Engineer – in this case – just means that the…… Continue reading Reverse Engineering an ERD

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Set up for an ERD

So, last time, we discussed briefly what an ERD is and how it makes life easier for you. This time, let’s go thru setting one up. The first step – and possibly the hardest – is picking out the right tool for you. Over the past several years, I have tended more towards the ones…… Continue reading Set up for an ERD

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The Real Value of ERDs

Several years ago, when I first started working with databases, I was lucky enough to work under a manager that believed in the value of Entity-Relationship Diagrams – better known as ERDs. For those of you not familiar with ERDs, they show the relationships of entity sets stored in a database. In other words, they show how each table…… Continue reading The Real Value of ERDs

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