1 00:00:12,580 --> 00:00:13,780 In this video. 2 00:00:13,810 --> 00:00:22,480 Let's get started with MongoDB by learning what is called CRUD operations, because these actions are 3 00:00:22,480 --> 00:00:25,270 needed by any application. 4 00:00:25,270 --> 00:00:31,750 So what is called operation, let's see more C stands for create. 5 00:00:31,750 --> 00:00:39,520 If you want to save something into MongoDB, we are going to use what is called create operation and 6 00:00:39,520 --> 00:00:41,440 our stand for raid. 7 00:00:41,440 --> 00:00:49,990 If you want to fetch what we have created, we are going to use the raid method and after that you stand 8 00:00:49,990 --> 00:00:51,460 for update. 9 00:00:51,460 --> 00:00:58,450 So after creating and we want to update the record, we are going to use update operation. 10 00:00:58,660 --> 00:01:02,920 And finally we have D which stands for Delete. 11 00:01:02,950 --> 00:01:07,120 If you want to delete a record, how are we going to do it? 12 00:01:07,120 --> 00:01:10,000 So let's start with create. 13 00:01:10,030 --> 00:01:15,460 How can we create, record and save into MongoDB? 14 00:01:15,490 --> 00:01:17,110 This is the time. 15 00:01:17,110 --> 00:01:18,520 Let's get rocking. 16 00:01:18,940 --> 00:01:22,390 All right, so let's see how we are going to do. 17 00:01:22,390 --> 00:01:29,230 We need to learn the MongoDB command or syntax, so let's see how we can create. 18 00:01:29,230 --> 00:01:37,570 So click on resources and click on applications and we are going to use the driver. 19 00:01:37,600 --> 00:01:43,060 So click on drivers and let's click on the Node.js. 20 00:01:43,060 --> 00:01:46,960 And now this is a guide for Node.js. 21 00:01:46,960 --> 00:01:51,760 So on the left side here, click on fundamentals. 22 00:01:51,760 --> 00:01:57,100 And here you can see that we have what is called crowd operations. 23 00:01:57,100 --> 00:02:03,100 So click on that and what we want is what you call right operations. 24 00:02:03,100 --> 00:02:05,230 So let's click on that. 25 00:02:05,230 --> 00:02:13,090 And these are the method where we can walk right record into MongoDB and you can see that we have what 26 00:02:13,090 --> 00:02:16,500 is called raid operations and you have right operation. 27 00:02:16,510 --> 00:02:23,320 Right operation simply means we can insect's modify delete the command in your MongoDB database. 28 00:02:23,320 --> 00:02:26,560 So let's click on the insect document. 29 00:02:26,560 --> 00:02:36,280 So for insect we can add record into MongoDB and we have couple of ways of inserting document or creating 30 00:02:36,280 --> 00:02:38,890 document into MongoDB. 31 00:02:38,980 --> 00:02:47,830 We have single document for this method we use to create a single record and save it into MongoDB. 32 00:02:48,100 --> 00:02:52,000 And for this we can also insect multiple document. 33 00:02:52,000 --> 00:02:57,790 So let's look at a sample of the methods and are in a single document. 34 00:02:57,790 --> 00:03:05,230 And one of them is what we call insect one and insect one resort and insect one. 35 00:03:05,230 --> 00:03:11,590 So let's get back to visual, see the code and see how we are going to write these commands to get it 36 00:03:11,590 --> 00:03:12,100 done. 37 00:03:12,100 --> 00:03:19,240 So back to visual the code before we can save record in database, we need two things. 38 00:03:19,240 --> 00:03:26,110 One is the database name that we want to write into, and secondly, the collection. 39 00:03:26,110 --> 00:03:31,600 So let's go ahead and create the database and our collection. 40 00:03:31,690 --> 00:03:39,640 Remember, we can also do the same thing from our dashboard, but let's create the database for our 41 00:03:39,640 --> 00:03:40,150 code. 42 00:03:40,150 --> 00:03:42,190 So here we go. 43 00:03:42,190 --> 00:03:48,190 So after connecting, then down here we can go ahead and create new database. 44 00:03:48,190 --> 00:03:54,640 So here is a syntax, create new DB or database for short. 45 00:03:54,640 --> 00:03:55,810 So here we go. 46 00:03:55,840 --> 00:03:59,500 Cost database or db. 47 00:03:59,530 --> 00:04:01,060 Let's make it db for short. 48 00:04:01,060 --> 00:04:09,730 DB is equal to client which is from this one after initialization of the mongo client. 49 00:04:10,000 --> 00:04:18,010 On that, we have a method for MongoDB called DB meaning database and here we pass in the database name. 50 00:04:18,040 --> 00:04:21,339 Let's say we are creating database for as school. 51 00:04:21,339 --> 00:04:23,920 So this is my database. 52 00:04:24,220 --> 00:04:29,320 So after creating it, the next step is I need to create a collection. 53 00:04:29,320 --> 00:04:36,370 Remember a database comprises of collection because for our school we can have courses, we can have 54 00:04:36,370 --> 00:04:40,930 users, we can have employees and many more or departments. 55 00:04:40,930 --> 00:04:45,460 So we need to create collections where we can keep it inside our database. 56 00:04:45,460 --> 00:04:47,950 So next step is create collection. 57 00:04:51,290 --> 00:04:54,800 So here you go comes the name of the collection. 58 00:04:54,800 --> 00:04:56,300 Let's call this one. 59 00:04:56,630 --> 00:04:57,410 Students. 60 00:04:58,070 --> 00:05:04,460 Students collection which is equal to DB dot collection. 61 00:05:04,460 --> 00:05:08,190 And how pass in the collection name for this one. 62 00:05:08,210 --> 00:05:10,010 I would say students. 63 00:05:10,160 --> 00:05:13,760 Students collection and that is it. 64 00:05:13,790 --> 00:05:22,100 So if I try to console.log student collection, I believe we are going to see empty collection. 65 00:05:22,100 --> 00:05:31,070 So let's get back to Terminus here and then restart my application and let's see where I get an object 66 00:05:31,070 --> 00:05:31,970 with properties. 67 00:05:31,970 --> 00:05:40,220 So but if you get back to the MongoDB dashboard here now when I click on Browse collection, let's see 68 00:05:40,220 --> 00:05:42,350 the collection that we have. 69 00:05:42,500 --> 00:05:49,850 Well, we still see empty collection simply because there is no record inside the collection. 70 00:05:49,850 --> 00:05:55,490 So as soon as we insert a record into collection, we are going to see some data here. 71 00:05:55,490 --> 00:05:57,170 So let's continue. 72 00:05:57,260 --> 00:06:01,460 So now we are done with the creating of the database and then the collection. 73 00:06:01,460 --> 00:06:04,600 The next step is let's create document. 74 00:06:04,610 --> 00:06:11,510 So here we go, create document and that is the student. 75 00:06:11,870 --> 00:06:14,300 So let's create a sample student here. 76 00:06:14,330 --> 00:06:16,040 So here we go. 77 00:06:16,040 --> 00:06:18,500 How can we create students? 78 00:06:18,830 --> 00:06:22,160 Remember, we got the students document here. 79 00:06:22,160 --> 00:06:29,840 So on this one we can use all the operations like delete update on this collection called Students. 80 00:06:29,840 --> 00:06:31,580 So here we go. 81 00:06:32,150 --> 00:06:36,590 So our code, this one const student. 82 00:06:37,480 --> 00:06:38,200 One. 83 00:06:38,650 --> 00:06:42,210 Equal to the student collection, which is this one. 84 00:06:42,220 --> 00:06:51,370 On that we have a method called insect insect one meaning I want to create a single user or student. 85 00:06:51,370 --> 00:06:55,420 So here are parts in an object with properties. 86 00:06:55,420 --> 00:06:59,640 So here I provide the name of the student. 87 00:06:59,650 --> 00:07:01,660 I would say John Doe. 88 00:07:02,910 --> 00:07:06,670 And next is, let's say, the email of the student. 89 00:07:06,690 --> 00:07:12,060 Let me provide a city of the students and let's say Kumasi as that. 90 00:07:12,300 --> 00:07:17,340 Now, do you remember I made mentioned that MongoDB is seamless? 91 00:07:17,370 --> 00:07:18,990 Here is the answer. 92 00:07:19,320 --> 00:07:26,790 If we see that we are not specifying what we want to create, but instead we can insert any record into 93 00:07:26,790 --> 00:07:27,720 MongoDB. 94 00:07:27,810 --> 00:07:34,340 But if you are working with relational database, unless you specify the things that you want to create, 95 00:07:34,350 --> 00:07:36,330 how awesome is MongoDB? 96 00:07:36,660 --> 00:07:41,040 So with this one is going to take some time to create. 97 00:07:41,040 --> 00:07:46,240 It can be successful or not, so we need to handle the promise. 98 00:07:46,260 --> 00:07:53,430 And lucky for us, because our function, we have marked this one as an async, I can go ahead and await 99 00:07:53,430 --> 00:07:59,970 the action as that with it here and now if I go ahead and console.log. 100 00:07:59,970 --> 00:08:01,980 Student one Save it. 101 00:08:01,980 --> 00:08:03,990 And now, moment of truth. 102 00:08:04,500 --> 00:08:13,620 Let's clear the console and restart the file and let's see if we are going to see student a acknowledged 103 00:08:13,650 --> 00:08:17,310 meaning that we are able to create a student. 104 00:08:17,340 --> 00:08:24,330 We see a property called acknowledged meaning true, which means that it is successful and to know that 105 00:08:24,330 --> 00:08:25,320 it is successful. 106 00:08:25,320 --> 00:08:34,169 MongoDB has given us infected ID and MongoDB has represented that particular student with this ID. 107 00:08:34,200 --> 00:08:36,450 How awesome it is. 108 00:08:36,570 --> 00:08:39,570 So back to MongoDB dashboard. 109 00:08:39,720 --> 00:08:44,280 If I refresh it, I'm going to see that red card. 110 00:08:45,120 --> 00:08:49,410 And here we go, guys. 111 00:08:49,410 --> 00:08:51,000 Are you happy about it? 112 00:08:51,460 --> 00:08:59,250 You can see that we have a school database and and that we have a collection called Student. 113 00:08:59,250 --> 00:09:07,080 And inside we have one document which is user corps John Doe from Kumasi. 114 00:09:07,380 --> 00:09:09,630 That is awesome, guys. 115 00:09:09,630 --> 00:09:11,220 That is awesome. 116 00:09:11,370 --> 00:09:13,630 Again, we can inspect more. 117 00:09:14,000 --> 00:09:15,690 Student So here we go. 118 00:09:15,840 --> 00:09:18,300 Our call this one are single. 119 00:09:21,230 --> 00:09:29,090 Ain't our copy this one and down here is that let me comment this one because I'm done with it. 120 00:09:29,090 --> 00:09:30,590 And now let me call this one. 121 00:09:30,800 --> 00:09:32,540 Student two Let me say. 122 00:09:32,540 --> 00:09:39,440 STUDENTS two Because we are going to create many students here and I'll console.log the students two 123 00:09:39,470 --> 00:09:39,980 here. 124 00:09:40,190 --> 00:09:47,630 So to be able to insert more repos to the end here, I will change the comment here to more repo record. 125 00:09:47,810 --> 00:09:50,330 So the syntax is going to be different. 126 00:09:50,330 --> 00:09:53,420 So let's see how we can insert menu record. 127 00:09:53,420 --> 00:10:02,450 And we are going to use a method called insect money and the more repo document, which is this one, 128 00:10:02,450 --> 00:10:07,910 we are going to use a method called insect money, which is this. 129 00:10:08,240 --> 00:10:09,380 So let's see. 130 00:10:09,380 --> 00:10:14,540 So instead of taking an object, insect money ticks in an array. 131 00:10:14,540 --> 00:10:24,320 So as this one and let me change the name here to insect money here, we're going to be array of students. 132 00:10:24,320 --> 00:10:27,650 So the first one going to be object with the first student's name. 133 00:10:27,680 --> 00:10:30,440 Let me call this one as. 134 00:10:31,220 --> 00:10:34,160 Emanuel and the city. 135 00:10:34,970 --> 00:10:39,410 And let me add a new student so I would copy this object. 136 00:10:39,410 --> 00:10:41,060 And here, let me pace it. 137 00:10:41,060 --> 00:10:43,070 Let me change this one to Thomas. 138 00:10:44,830 --> 00:10:48,220 And from us is also from Western. 139 00:10:49,700 --> 00:10:50,800 Okay, great. 140 00:10:50,810 --> 00:10:51,830 So let me save it. 141 00:10:51,830 --> 00:10:53,570 And now I'm console again. 142 00:10:53,570 --> 00:10:56,120 Student two So back to my terminal. 143 00:10:56,150 --> 00:10:58,220 Let me start the file and let's see. 144 00:10:59,210 --> 00:11:06,290 A quasi that I see acknowledge in sector to document and I get acknowledged true with different IDs. 145 00:11:06,290 --> 00:11:12,590 So now back to my dashboard if I refresh it and there we go. 146 00:11:12,620 --> 00:11:15,770 Let's see, we have 2 to 3 record. 147 00:11:15,770 --> 00:11:21,980 At first I added one record and next one I added to student to go. 148 00:11:22,340 --> 00:11:28,460 So in the next video, let's see how we can fetch this document and then display it inside our application. 149 00:11:28,460 --> 00:11:30,080 That is our terminal here.