1 00:00:00,330 --> 00:00:00,630 All right. 2 00:00:00,630 --> 00:00:01,530 Welcome back. 3 00:00:01,590 --> 00:00:06,510 In this lesson I'm going to introduce you to Mongo D-B which is the main database that we'll use through 4 00:00:06,510 --> 00:00:07,650 most of the course. 5 00:00:07,950 --> 00:00:11,800 And by the end of the video Our goal is to have Mongo T-P installed. 6 00:00:11,810 --> 00:00:16,860 So let's start by talking about what is Mongo D-B what type of database is it and why are we using it 7 00:00:16,860 --> 00:00:17,460 . 8 00:00:17,460 --> 00:00:25,170 I briefly mentioned this in the last video but Mongo DP is a no sequel or non-relational database so 9 00:00:25,170 --> 00:00:29,960 our data will look like this where it basically looks like javascript objects and arrays. 10 00:00:30,060 --> 00:00:32,780 Key value pairs that we store in the database. 11 00:00:33,000 --> 00:00:35,550 And that means that it's very flexible and dynamic. 12 00:00:35,700 --> 00:00:37,640 But that's not really why we're using it. 13 00:00:37,740 --> 00:00:43,590 Because to be honest with you the stuff that we're going to be doing is doable in any of the databases 14 00:00:43,680 --> 00:00:47,970 that I could have picked from and this is one of those decisions that I made where I could have gone 15 00:00:47,970 --> 00:00:54,480 either way we could have learned post-grads we could've learned Majeski Well we could have learned Mongo 16 00:00:55,140 --> 00:01:00,720 and the main reason that I decided on Mangu is that it's the most popular database right now with node 17 00:01:00,890 --> 00:01:02,200 with Express. 18 00:01:02,200 --> 00:01:07,440 There's a pretty popular stack that you might have heard of called the mean stack and that stands for 19 00:01:07,440 --> 00:01:11,280 Mongo express angular and Noad. 20 00:01:11,280 --> 00:01:14,290 So we're going to do the men stack for now. 21 00:01:14,390 --> 00:01:15,280 No angular. 22 00:01:15,540 --> 00:01:19,260 So that's Mongo Express and node and we have these two down. 23 00:01:19,320 --> 00:01:23,880 Now we need to learn about Mongo and the other reason I decided on Mongo is that it has really good 24 00:01:23,880 --> 00:01:27,150 tools right now for us to use it instead of an express app. 25 00:01:27,180 --> 00:01:32,400 So just to reiterate there were a few options of databases that we could have picked from by picking 26 00:01:32,400 --> 00:01:33,100 Mongo. 27 00:01:33,150 --> 00:01:37,610 I am not saying that you should always use Mongo that it's the best thing in the world. 28 00:01:37,650 --> 00:01:43,590 In fact it got so popular so quickly that there's been a backlash against it from a small part of the 29 00:01:43,590 --> 00:01:45,570 community in the last few years. 30 00:01:45,660 --> 00:01:47,990 And then there's been a backlash against that backlash. 31 00:01:48,060 --> 00:01:49,840 But it is somewhat controversial. 32 00:01:49,860 --> 00:01:54,870 Lots of companies are using it and it's very quickly becoming one of the most popular databases. 33 00:01:54,870 --> 00:02:00,720 It's currently the most popular no sequel database and it's the third or fourth most popular database 34 00:02:00,720 --> 00:02:01,630 in general. 35 00:02:01,980 --> 00:02:07,800 OK so before we move on to installing it let me show you the Mangu D-B home page so it's Mangu D-B dot 36 00:02:07,830 --> 00:02:08,760 org. 37 00:02:08,760 --> 00:02:10,380 You can read the docs here. 38 00:02:10,650 --> 00:02:14,700 That will explain some of the methods some of the syntax that you need to know. 39 00:02:14,710 --> 00:02:20,760 There's this university tab where they offer online courses and you can watch some of these if you're 40 00:02:20,760 --> 00:02:22,650 interested but you don't need this. 41 00:02:22,650 --> 00:02:24,190 You have another online course. 42 00:02:24,300 --> 00:02:26,370 So let's get back to installing it now. 43 00:02:26,640 --> 00:02:32,850 And what we need to do is install Mongo in our cloud nine instance and cloud nine. 44 00:02:32,850 --> 00:02:36,220 Fortunately for us has a nice set of instructions. 45 00:02:36,390 --> 00:02:37,880 So I'm going to walk you through it. 46 00:02:38,070 --> 00:02:42,600 What we need to do is run three simple commands but they are important commands. 47 00:02:42,660 --> 00:02:47,400 So I'm going to ask you to watch me do it first before you follow along. 48 00:02:47,670 --> 00:02:50,330 So this will be 30 seconds of me running commands. 49 00:02:50,550 --> 00:02:51,740 And then you should do it on your own. 50 00:02:51,750 --> 00:02:56,550 But I just want you to pay attention pretty closely because these are important what we need to do first 51 00:02:56,910 --> 00:02:59,710 is make a directory and we're going to call it data. 52 00:02:59,850 --> 00:03:03,030 And that's where Mangu is going to store all of its information. 53 00:03:03,240 --> 00:03:05,920 So we need to make the directory so you can see here. 54 00:03:06,420 --> 00:03:12,180 And then we need to tell Mangu that that data directory is where it should store all the data and when 55 00:03:12,180 --> 00:03:16,080 to tell it where that directory is which is what this command does. 56 00:03:16,350 --> 00:03:18,560 You don't need to worry about what exactly it does. 57 00:03:18,570 --> 00:03:20,270 You can read more here. 58 00:03:20,880 --> 00:03:26,700 But again it just is telling Mangu to use our new data directory and then we have to run this third 59 00:03:26,700 --> 00:03:32,040 command here which will help change some of the permissions and settings so that things work smoothly 60 00:03:32,030 --> 00:03:32,540 . 61 00:03:32,610 --> 00:03:38,550 So I'm going to go ahead and run that however I'm going to move into a new directory and the directory 62 00:03:38,550 --> 00:03:45,000 I'm going to go into is actually outside of this main web dev boot camp directory. 63 00:03:45,000 --> 00:03:53,010 So right now if I in my terminal can see I'm on the workspace I'm actually going to see one more level 64 00:03:53,010 --> 00:03:59,580 out or now I see my workspace and I don't have to do this I can install this data directory anywhere 65 00:03:59,880 --> 00:04:04,770 but I'm going to put it outside just so that you don't accidentally deleted we don't accidently mess 66 00:04:04,770 --> 00:04:06,220 with it at any point. 67 00:04:06,310 --> 00:04:12,090 So we're going to do that now and make directory data makes this a little bit bigger. 68 00:04:13,440 --> 00:04:19,710 And our clear everything and make sure we see the data directory and then I'm going to copy this line 69 00:04:21,420 --> 00:04:28,850 and paste that in and hit enter and then the very last thing is running. 70 00:04:28,850 --> 00:04:32,480 This line here just like that. 71 00:04:32,850 --> 00:04:34,050 OK. 72 00:04:34,190 --> 00:04:39,060 Now if we go back to the instructions you can see that we've finished the three commands that we needed 73 00:04:39,060 --> 00:04:40,150 to run. 74 00:04:40,380 --> 00:04:42,330 And now we have Mongo installed. 75 00:04:42,450 --> 00:04:48,750 So all we have left to do is actually start Mongo and we to start what is called the Mongo deman which 76 00:04:48,750 --> 00:04:53,430 is basically a process that is going to start Mongo and we're going to keep it running in the background 77 00:04:53,490 --> 00:04:55,670 for the rest of the course. 78 00:04:56,280 --> 00:05:03,150 And the command to do that looks like this dot slash Hmong God which is Mongo demon. 79 00:05:03,270 --> 00:05:05,100 So we'll go back. 80 00:05:05,100 --> 00:05:09,060 We need to run this in the directory where we see Man-God. 81 00:05:09,060 --> 00:05:13,700 It's the same directory where we installed data and then we'll just paste that commanded. 82 00:05:14,430 --> 00:05:16,540 And you should see a bunch of text. 83 00:05:17,010 --> 00:05:19,910 And this is the Mongo server that's now started. 84 00:05:20,070 --> 00:05:23,390 So it's a process that we started with this command right here. 85 00:05:23,760 --> 00:05:25,860 And then what we'll do is we'll leave this running. 86 00:05:25,860 --> 00:05:29,700 So I'm actually going to leave this tab open and make a new tab. 87 00:05:29,850 --> 00:05:35,280 You can do that here plus sign new terminal and this is where we'll work inside of it for most of the 88 00:05:35,280 --> 00:05:35,890 course. 89 00:05:35,940 --> 00:05:40,440 We won't touch this because we want our database to always be running so that we can always connect 90 00:05:40,440 --> 00:05:41,570 to it. 91 00:05:41,580 --> 00:05:42,980 So let's try it now. 92 00:05:43,130 --> 00:05:47,540 There's a simple test we can type the word Mongo and hit enter. 93 00:05:48,300 --> 00:05:53,140 And if our prompts changes which it does that means that everything's working just fine. 94 00:05:53,480 --> 00:05:59,250 And what we just did here by typing Mangu and hitting enter is we opened up the Mongo D.B shell or the 95 00:05:59,250 --> 00:06:05,460 Mongo console which is a place we can go to interact with our data to debug things just like the javascript 96 00:06:05,460 --> 00:06:08,910 console is a place we can debug but it's not where we actually work. 97 00:06:08,910 --> 00:06:10,690 Most of the time. 98 00:06:10,950 --> 00:06:12,590 So that's all we'll do for now. 99 00:06:12,600 --> 00:06:16,870 Make sure you have this Mongo daemon running in the background at all times. 100 00:06:16,920 --> 00:06:20,070 If it ever stops it gets accidently stopped it. 101 00:06:20,070 --> 00:06:22,140 I can just run that command again. 102 00:06:22,410 --> 00:06:26,470 But I do need to make sure I'm in the right directory where we created that data folder. 103 00:06:26,580 --> 00:06:30,620 So leave this running open up a new tab and that's it for now. 104 00:06:30,630 --> 00:06:34,890 In the next lesson I'm going to show you how you can start writing some Mongo code to interact with 105 00:06:34,890 --> 00:06:37,890 the database add things and remove them. 106 00:06:37,890 --> 00:06:39,040 Read them back out. 107 00:06:39,060 --> 00:06:40,410 All that fun stuff. 108 00:06:40,440 --> 00:06:41,390 All right I'll see you then.