Spreadsheets – Excel, Google Sheets, or a sheet by any other name – are really cool and powerful tools. But then, so are databases. When should you stick with a spreadsheet? When should you move up to a database?You can use spreadsheets and databases for similar purposes. Given that both organize data and facilitate reporting, at times it can be hard to determine which is the best one to use. So let’s talk about the pros and cons of each option.
There isn’t much chance you’ve missed the whole idea of the sharing economy – whether you like it or not. Popularized by companies like Airbnb, Uber, Lyft, and many others, it lets people earn some cash by renting out their unused stuff. Let’s see the data model behind such an application.Got a spare room? Sign up with Airbnb and make some extra money renting it out. Got a car and some free time? Become an Uber driver. And so it goes – the idea behind these companies and many more like them is almost the same. It’s all about sharing a resource with (mostly) strangers, with a perk for both parties. The owner gets money for their unused property, while the customer usually gets a good deal; this should be a win-win situation.
If there’s a way to order groceries online, why not use it? This article examines the data model behind a grocery store’s delivery system.We still get a special feeling from picking something from the garden and then preparing it right away – but it’s not something we can do often. Today’s fast pace doesn’t allow it. In fact, sometimes it doesn’t even allow us to go to the store to “pick” our groceries. So it makes sense to save ourselves some time and use an app to order what we need. Our order will just show up at our home. Maybe we won’t get that special fresh-picked feeling, but there will be food on our table.
Turn-based games and their map-based counterparts have been popular for a long time. Suppose we were to take such games into the 21st century by making them digital. What data model is up to the job?If you think about it, many popular games have been map-based, turn-based, or both. On the one hand, we have simple low-tech board games likeDon’t Get AngryandMonopoly; the other end of the spectrum includes the computer-based
Organizing children’s parties is not an easy job: everything has to be perfectly planned and delivered. Otherwise, chaos happens. It’s up to the adults – more specifically, the party planners – to take care of everything and do it properly.Is there a better way to do this than to organize everything in a database? We don’t think so!Children’s parties vary a lot. Some are simple, like birthday parties that include just invitations, food (snacks, beverages, and a cake) and maybe a clown or a magician to entertain the kids. Other parties are much more complex. They may require a trip out of town, sleeping accommodations, and many other activities. The more complicated the party, the less room for mistakes. While a clown that’s 10 minutes late isn’t a big deal, no one wants to wait with a group of bored kids for a bus that’s two hours late!
Hungry but you don’t want to cook? Call up a restaurant, order your favorite meal, and read about a data model that can organize the whole process.Despite an abundance of “time-saving” technology, we seem to have less time to fulfill basic needs – such as eating. If we want to eat something but we don’t have the time (or the skills) to cook it ourselves, we can order food from a restaurant (i.e. a takeaway or takeout), which will bring our meals right to our doors. Of course, we have to pay for this convenience, so we expect the food to be good and hot!
It’s Valentine’s Day and you’re single. Again. Not cool. Not cool at all. We’ll do something about that with today’s dating app data model. Ok, reading this article won’t automatically get you a date. Or maybe it will. Let’s see.How many dating apps can you name? I can think of at least a dozen. As data modelers, though, we’re more interested in the data model underneath the app than the app itself. So let’s examine what it takes to run a data app, starting with what we need it to do.
Trading cryptocurrencies, buying stocks, and the like is extremely popular these days – it’s perceived as easy profit. Prices are currently rising, but we can’t know when that will change. On the other hand, we know it will at some point. But we’re not here to make financial predictions. Instead, we’ll talk about a data model that can be used to support the trade of cryptocurrencies and financial instruments like stocks or fund shares.
If you’re a Star Trek fan, you likely know that Captain Kirk and Mr. Spock frequently play a variant of chess called Tri-Dimensional Chess, or 3D chess, a game that’s similar to standard chess but with notable differences. In this article, we’ll build a data model for a 3D chess application that allows players to compete against each other. Beam us up, Scotty!The Concept of 3D ChessWhile chess itself is already a complex game, combining boards and multiple sets of pieces can significantly increase the game’s complexity.
With the holidays quickly approaching, Santa needs some additional help to deliver presents to children around the world. Today, we’ll develop a data model that can help Santa and his elves work more efficiently.BackgroundSanta’s job is extremely important, so he needs to do everything he can to ensure on-time success. Just remember all the problems Howard encountered in ‘Jingle All the Way’ when trying to find a single Turbo Man figure—we can’t let Santa slip up again, or his reputation will be ruined. So, to help Santa stay organized, we’ll divide his activities into three main phases.