Tim Sehn

February 23, 2020

John Hopkins University Center for Systems Science and Engineering began collecting, tabulating, and publishing Novel Coronavirus (COVID-19) data on January 31, 2020. We started importing this dataset into Dolt on February 5, 2020. This blo...

Matt Jesuele

February 20, 2020

Towards the end of last month, we launched a totally reworked and redesigned version of DoltHub , our web application for hosting and collaborating on Dolt repositories. Now that we've had a little while to iron the kinks out, it seems like...

Oscar Batori

February 17, 2020

Background We are excited to announce the launch of our documentation site . The goal of Dolt and DoltHub is to enable developers and the data community with radically better data infrastructure. High quality documentation should empo...

Zach Musgrave

February 14, 2020

Happy Valentines Day from all of us at DoltHub ! You are the reason we do what we do! In honor of the holiday, we want to talk about how much we love making queries faster. We're going to examine how our...

Katie McCulloch

February 13, 2020

Dolt and DoltHub strive to be the best data distribution platform on the internet. Having documentation versioned alongside data, and a standard, easy way to read the documentation online are features we admire in Git and GitHub. Following ...

Aaron Son

February 10, 2020

Dolt is a SQL database with Git-style versioning and distribution. The most recent releases of Dolt introduced support for SQL views that are stored as part of, and versioned along with, a Dolt repository. This provides a great way for data sets ...

Tim Sehn

February 3, 2020

Dolt is a SQL database with Git-style versioning. In Git the unit of versioning is files. In Dolt, the unit of versioning is SQL tables. Dolt will eventually support 100% of the Git command line and 100% of MySQL SQL. Moreover, anything you can d...

Brian Hendriks

February 3, 2020

In a previous blog I showed how the history of a dataset can be queried using the dolt history tables, and in the first part of this 2 part blog I covered the IRS SOI data . In this second part I use the IRS SOI data along with doltpy ...

Brian Hendriks

January 31, 2020

Every year the IRS publishes a treasure trove of data. It contains over a hundred different metrics which provide insight into the finances of American taxpayers. Even more compelling is they provide this information at ZIP code granularity, which…...

Andy Arthur

January 29, 2020

Since its launch in 2008, GitHub has catalyzed the open source software world and accelerated the culture of software collaboration. Source control was an old idea at that point, but GitHub offered a centralized place to discover and collaborate...

Brian Hendriks

January 23, 2020

When we started developing Dolt our vision was to deliver git functionality for data. Where git versions files, Dolt versions tables. We implemented table based diff and conflict logic and shipped the initial version. As we started to use Do...

Oscar Batori

January 22, 2020

Redesigning DoltHub Dolt is a database and a data format. DoltHub is a way of hosting and collaborating on Dolt databases. We decided to redesign DoltHub to make it more user friendly. We are excited to announce that we have released the resu...

Zach Musgrave

December 17, 2019

A few months ago we finally settled on a good way to measure the correctness of Dolt's SQL engine: the sqllogictest package, first developed for SQLite and since used as a benchmark for lots of other database implementations. SQLite hit u...

Tim Sehn

December 6, 2019

IBM and General Electric invented the first databases in the early 1960s. It was only by the early 1970s that enough data had accumulated in databases that the need to transfer data between databases emerged. Enter the Comma Separated Values (CSV…

Taylor Bantle

December 4, 2019

Wikipedia is the largest and most popular general reference work on the internet, making it a powerful tool for predictive language modeling. Wikipedia releases a dump of all its articles and pages twice a month, and we created a dataset of...

Zach Musgrave

November 19, 2019

Since releasing Dolt , we have often been asked how it scales. How many rows and how many gigs can you get into a Dolt dataset before things start breaking badly? Answering this question in practice is kind of difficult, simply because it'...

Tim Sehn

November 11, 2019

I have been a huge Econtalk fan for over ten years. On his podcast with Sebastian Junger , Russ Roberts brought up what he called a Chinese proverb. No food, one problem. Have food, many problems. The wisdom of this saying really resonated ...

Tim Sehn

November 1, 2019

ImageNet is a dataset maintained by the Stanford Vision Lab. It seems to have fallen into disrepair. The links to download the image labels are broken. We have managed to procure all four released versions of the labeled images and import them ...

Matt Jesuele

October 29, 2019

Ever look at some data and wonder where a particular value came from, how long it's been there, or what the reason for changing it was? This is important information, but current data storage formats don't track or expose it—certainly not in a…

Tim Sehn

October 28, 2019

As we discussed in the Where Is the Data Catalog? blog post, Dolt is a database designed for internet-scale collaboration. There are databases with differences, history, rollback, and audit logging. We think the Git semantics of Dolt provi...