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Finishing up DLD 2.0

tmoore — Sat, 08 Jan 2011 06:50:54 +0000

It's been a long time coming, but I'm finishing up DLD 2.0 for iOS. I hope to submit next week.

What's new? Everything. Depending on whether it gets through the approval process, here's a summary:

Migrating the Devonian Lithological Database to a Fully Relational System: The Story So Far

tmoore — Sat, 07 Aug 2010 19:07:12 +0000

The Devonian Lithological Database (DLD for short) is a database I published as part of my PhD work at the University of Arizona. As databases go, it was quite primitive but it got the job done. Over the past year or so, I've been migrating the database to a more modern SQL format using SQLite. SQLite is a public domain database designed to work without a server. It is easy to use (for a SQL database) and the data file is generally cross platform.

The migration from the original DLD format to the SQLite format has not been easy. DLD originally consisted of two basic tables: the data records and the source list. The data records were based in Microsoft Excel with 34 columns of information. The reference list was just a Endnote database. Inserting these tables into SQLite is actually quite easy. However, early on, issues made themselves apparent.

A Case for Spatially-Enabled Reference Databases

tmoore — Fri, 02 Jul 2010 21:19:45 +0000

In my latest video, I try to make the case that spatially-enabled reference databases are very powerful tools. Thus, I show how such a reference database can be used to work with developing geological databases like the Devonian Lithological Database.

Here's the video:

Why should scientific papers be "spatially enabled"

tmoore — Sat, 19 Jun 2010 00:07:18 +0000

Now that I'm starting to build the databases needed for my new lithological database, I'm coming back to how I created my Devonian database. The papers I generally worked with contained reports from the field, including lithology, measurements, location, etc. That can be a LOT of information. Collecting it all from each paper is time consuming to say the least. Howevever, there was another problem...

Developing a new lithological database: Can I do it better this time?

tmoore — Fri, 11 Jun 2010 17:12:45 +0000

It's now over 10 years since I published the Devonian Lithological Database as part of my PhD thesis. Clearly, it's not perfect or even what I can consider "finished", but I'm proud of the work anyway. The data I collected have been used by oil companies and incorporated into newer and bigger databases. I hope people will still find it useful for years to come.

This year, I've begun at least the planning process of embarking on building a new lithological database. So, to really start the planning process, I need to recognized what worked and what didn't work in the Devonian database.