Models of the World video thumbnail

Models of the World

 

I’m reading the book JavaScript and JQuery by Jon Duckett, and it has given me a new perspective on programs and how they interact with data. In this vlog I expound on that.

Video transcript:

Hey! So I wanted to make a video about this book I’m looking at called JavaScript and JQuery. It’s kind of made a shift in the way I look at programming and how programs interact with computers. I had made some things, I’ve made some objects, functions, put some data in there, and the programs done some things but, the way that it explains it in this book, I think it would be beneficial to everybody. So first of all this is the book I’m looking at, JavaScript and JQuery. So firstly it says computers create models of the world using data. And I like this because it makes you think of programs as a representation of the world as opposed to, you know, a bunch of lines of code lol… And here it shows you a hotel and some cars and it goes on to say, you can think of objects as the hotel, the people, the cars. And when you look at events, this is when we interact with those objects and cause something to happen. Like it says here an event at the hotel would be a reservation being made, or a reservation being cancelled. With the car, if the driver brakes it slows down, accelerate, it speeds up. And it goes on to say with methods, these in a way are the things that we DO with the objects in the world. Like it had a method here for, there’s a method make booking for… increases the value of make bookings property. Cancel booking decreases value of bookings property. With the cars it said there’s a method change speed where it increases or decreases the value of current speed property. So I just thought it was a really interesting way to look at programs as not just lines of code that are making a computer or an application do something. But it’s like, a representation of the world, and the things or the objects IN the world and how we interact with them.

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Love & Peace,

Danielle

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MongoDB vs. MySQL

First of all I love the flexibility you have with a non-relational database, in terms of being able to have a varying data set. Though it’s great to be able to have a schema for the data so it can still have a predictable structure. With MySQL, the data sets are tabular which is great for comparing, but with MongoDB the data sets are “collections” which are basically syntactically like JavaScript objects, actually BSON (Binary JSON), which of course is a plus! I’m already familiar with SQL commands so I was able to connect the MongoDB CRUD concepts with MySQL, though the commands are different and more like JavaScript as well. It’s fun comparing and contrasting. I’ll keep experimenting.

Love & Peace,

Danielle