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DP-203: Data Engineering on Microsoft Azure Certification Video Training Course

The complete solution to prepare for for your exam with DP-203: Data Engineering on Microsoft Azure certification video training course. The DP-203: Data Engineering on Microsoft Azure certification video training course contains a complete set of videos that will provide you with thorough knowledge to understand the key concepts. Top notch prep including Microsoft Azure DP-203 exam dumps, study guide & practice test questions and answers.

122 Students Enrolled
262 Lectures
10:17:00 Hours

DP-203: Data Engineering on Microsoft Azure Certification Video Training Course Exam Curriculum

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1

Introduction

6 Lectures
Time 00:25:00
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2

Design and implement data storage - Basics

17 Lectures
Time 01:52:00
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3

Design and implement data storage - Overview on Transact-SQL

12 Lectures
Time 00:34:00
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Design and implement data storage - Azure Synapse Analytics

53 Lectures
Time 04:42:00
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5

Design and Develop Data Processing - Azure Data Factory

36 Lectures
Time 04:23:00
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6

Design and Develop Data Processing - Azure Event Hubs and Stream Analytics

27 Lectures
Time 02:58:00
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Design and Develop Data Processing - Scala, Notebooks and Spark

30 Lectures
Time 01:59:00
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Design and Develop Data Processing - Azure Databricks

34 Lectures
Time 02:27:00
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9

Design and Implement Data Security

20 Lectures
Time 01:49:00
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10

Monitor and optimize data storage and data processing

27 Lectures
Time 02:11:00

Introduction

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Design and implement data storage - Basics

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Design and implement data storage - Overview on Transact-SQL

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Design and implement data storage - Azure Synapse Analytics

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Design and Develop Data Processing - Azure Data Factory

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Design and Develop Data Processing - Azure Event Hubs and Stream Analytics

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  • 13:00
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Design and Develop Data Processing - Scala, Notebooks and Spark

  • 2:00
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  • 6:00
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Design and Develop Data Processing - Azure Databricks

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Design and Implement Data Security

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Monitor and optimize data storage and data processing

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examvideo-11

About DP-203: Data Engineering on Microsoft Azure Certification Video Training Course

DP-203: Data Engineering on Microsoft Azure certification video training course by prepaway along with practice test questions and answers, study guide and exam dumps provides the ultimate training package to help you pass.

Design and implement data storage – Basics

12. Lab - Authorizing to Azure Data Lake Gen 2 - Access Keys - Storage Explorer

Hi, and welcome back. Now in this chapter, I just want to show you how you can use a tool known as the Storage Explorer to explore your storage accounts. So if you have employees in an organisation that only need to access storage accounts within their Azure account, instead of actually logging into the Azure Portal, if they only want to look at the data, they can make use of the Azure Storage Explorer.

This is a free tool that is available for download, so they can go ahead and download the tool. It's available for a variety of operating systems. I've already gone ahead and downloaded and installed the tool. It's a very simple installation. Now, as soon as you open up Microsoft Azure Storage Explorer, you might be prompted to connect to an Azure resource. So, if you don't see the screen, you can log in using the subscription option. If you're wondering what the Azure Store Explorer looks like, this is it. You can go on to the Manage Accounts section over here and click on "Add an account," and you'll get the same screen. I'll choose a subscription. I'll choose Azure.

I'll go on to the next one. You will need to sign on to your account. So I'll use my account information as your admin account information. Now, once we are authenticated, I'll just choose my test environment subscription. I'll press "apply." So I have many subscriptions in place. Now, under my test environment subscription, I can see all of my storage accounts. If I actually go on to Data Store 2000 here, I can see my blog containers, and I can go on to my data containers. I can see all of my image files. If I go on to do Lake 2000, onto that storage account, onto Blob containers, onto my data container, onto my raw folder, I can see my JSON file. Here, I can download the file. I can upload new objects onto the container. So the Azure Storage Explorer is an interface that allows you to work with not only your Azure storage accounts but also with your Data Lake storage accounts as well.

Now that we have logged in as your administrator, There are other ways you can authorise yourself to work with storage accounts. One way is to use access keys. We can see all of the storage accounts here. But let's say you want a user to only see a particular storage account. One way is to make use of the access keys that are linked to a storage account.

If I go back onto my Data Lake Generation 2 storage account here, if I scroll down onto the Security and Networking section, there is something known as access keys. If I go on to the access keys, let me go ahead and just hide this. I click on "Show keys," and here I have Key 1. So we have two keys in place for a storage account. You have key one, and you have key two. A person can actually authorise themselves to use the storage account using this access key.

So here I can take the key I copied to the clipboard and open it in your storage explorer. I'll go back on to manage accounts. Here, I'll add an account. I'll choose a storage account. It says account name and key here. I'll go on to the next one. I'll paste in the account key. You'll need to give the account name. I'll go back to Xiao. I can copy the account name from here. I can place it over here. place the same as the display name. Go on to Next and hit Connect. Now, here in the local and attached storage accounts, I can see my data lake Gen 2 storage account, so I can still have a view of all of my storage accounts that are part of my Azure admin over here. But at the same time, I can only see my data lake Gen 2 storage account.

If I go onto my blog containers, onto my data containers, onto my raw folder here, I can see my JSON file. I said, if you want, you can go ahead and even download the JSON file locally so you can select the location, click on the select folder, and it will transfer the file from the data lake in your Gentle Storage account. So this is one way of allowing users to authorise themselves to use the Gen 2 storage account.

13. Lab - Authorizing to Azure Data Lake Gen 2 - Shared Access Signatures

Now in the private chapter, I've shown how we could connect to a storage account. That is basically our deal. Storage Account using Access Keys As I mentioned before, there are different ways in which you can authorise access to a data lake storage account.

Now, when it comes to security, if you look at the objectives for the exam, the security for the services actually falls in the section of "design and implement data security." But at this point in time, I want to show the concept of using something known as shared access signatures to authorise or use an account as your daily lake storage account. The reason I want to show this at this point in time is because when we look at Azure Synapse, we are going to see how to use access keys and share access signatures to connect and pull out data from an Azure data lake generation 2 storage account.

And that's why, at this point in time, I want to show how we can make use of shared access signatures for authorising ourselves to use your Gen 2 storage account. So, going back to our resources, I'll go on to our data lake storage account. Now, if I scroll down, in addition to access keys when it comes to security and networking, we also have something known as a shared access signature. I'll go on to it; let me go ahead and hide this. Now, with the help of a shared access signature, you can actually grant selective access to the services that are present in your storage account with an access key.

So remember, in the last chapter, we had gone ahead and connected via an access key to a storage account. Now with the access key, the user can go ahead and work with not only the Blob service but also file shares, queues, and the table service as well. So these are all the services that are available as part of the storage account. But if you want to limit the access to just a particular service, let's say that you are going to get the shared access signature onto a user, and you want that user to only have the ability to access the Blob service in the storage account. So with that, you can actually make use of shared access signatures. Here, what you'll do is that in the allowed services, you will just unselect the file queue and the table service so that the shared access signature can only be used for the Blob service.

In the allowed resource types, I need to get access to the service itself, I need to give access for the user to have the ability to see the container in the Blob service, and I also need to give access to the objects themselves. So I'll select all of them. In terms of the allowed permissions, I can go ahead and give selective permissions. So in terms of the permissions, I just want to use it to have the ability to list the blocks and read the blogs in the Azure Data Lake Gentle Storage account.

I won't do anything or give permissions when it comes to enabling the deletion of versions. So I'll leave it as it is. With the shared access signature, you can also give a start and expiration date time. That means that after the end date and time, this shared access signature will not be valid anymore. You can also specify which IP addresses will be valid for this shared access signature. At the moment, I'll leave. Everything has this. I'll scroll down here. It will use one of the access keys from the storage account to generate the shared access signature.

So here I'll go ahead and click on this button for "Generate SAS and Connection String." And here we have something known as a connection string, the SAS token, and the Blob service SAS URL. The SAS token is something that we are going to use when we look at connecting onto the Data Lake Gen 2 storage account from Azure Synapse. At this point, let's see how to now connect to this Azure Data Lake Gen 2 storage account using a shared access signature. If I return to the Storage Explorer, the first thing I'll do is right-click on the attached storage account, which we've already done, while the access key is selected, and select Detach. So I'll say yes. Now I want to again connect to the storage account, but this time using the shared access signature.

So I'll go on to manage accounts. I'll add an account. Here I'll choose the storage account. And here I'll choose "share access signature." I'll continue to next year, but you must provide the SAS connection string. So I'll either copy this entire connection string or I can also go ahead and copy the Blob service SAS URL. So let me go ahead and copy the service's SAS URL. I'll place it over here. I'll just paste it. You can see the display name. I'll go on to the next page, and I'll go ahead and hit Connect.

So, in terms of the Data Lake, you can now see. I am connected by the SAS shared access signature. And as you can see, I can only access the Blob containers. I don't have access to the table service, the queue service, or the file sharing service. As a result, we are now restricting access to the Blob service only. at the same time. Remember that I mentioned that this particular shared access feature would not be valid after this date and time? So if you want to give some sort of validity to this particular shared access signature, something that you can actually specify over here, So I said the main point of this particular chapter was to explain to students the concept of a shared access signature. So there are different ways in which you can authorise yourself to use a storage account.

When it comes to Azure services, there are a lot of security features available for how you can access the service. It should not be the case that the service is open to everyone. There has to be some security in place, and there aren't different ways in which you can actually authorise yourself to use a particular service in Azure. Right, so this marks the end of this chapter. As I mentioned before, we are looking at using a shared access signature. In later chapters, we look at it as your synapse.

14. Azure Storage Account – Redundancy

Hi, and welcome back. Now in this chapter, I want to go through the concept of Azure Storage account redundancy. So when it comes to Azure Services, they always build the service with high availability in mind. And the same is true when it comes to the Azure Storage account. So by default, when you store data in an Azure Storage account—let's say you restore data using the Blob service—multiple copies of your data are actually stored. This actually helps to protect against any planned or unplanned events. View your data after uploading it to an Azure Storage account. In the end, it's going to be stored on some sort of storage device in the underlying Azure data center.

The data centre houses all of the physical infrastructure required to host your data and provide services. And no one can actually guarantee the 100% availability of all physical infrastructure. Something can go wrong. Something can actually go wrong because there are points of failure. There could be a network failure. There could be a hard drive failure, or there could be a power outage. So there are so many things that can actually happen. So in such events, there are different redundancy options to keep your data in check. We had actually seen this redundancy option when you are creating Azure data.

Lake Gentle Storage account. So if I go back onto Azure quickly, if I go ahead and create a new resource, I'll scroll down and choose Storage account. So when it came to redundancy, there were many options in place. You had locally redundant storage, georedundant storage, zone redundant storage, and geo-zone redundant storage. So many options are in place. And I'm going to give an overview of what all of these options mean. So, first, we have locally redundant storage. When you have an Azure Storage account, let's assume the storage account is in the central US. Location. When you upload an object to the storage account, three copies of your data are made. All of this data is within one data center. So this helps to protect against server rack or drive failures.

So if there is any sort of drive failure, So let's say one storage device were to go down within the data center; the other storage devices would still be available and have copies of your data. which means that in the end, your data is still available. So the lowest redundancy option that is available is locally redundant storage. But obviously, companies are looking for much more redundancy when it comes to critical data. So that's why there are other options that are also in place. Zone redundant storage is one option available. With locally redundant storage, what happens if the entire data centre were to go down? That means your object will not be available. But in the case of zone-redundant storage, your data is replicated synchronously across three availability zones.

Now, an availability zone is just a separate physical location that has independent power, cooling, and networking. So now your object is actually distributed across different data centers. These data centres are displayed across these different availability zones. So now, even if one data centre were to go down, you would still have your object in place. But now let's say that the entire region goes down to the central US. That means, again, all your ability zones are no longer available. And as I mentioned, for companies that are hosting critical data, it is very important for them to have their data in place all the time, so they can opt for something known as "geo-redundant storage." What happens now is that your data is replicated to a different region entirely.

So, if your primary location is in the central United States, the LRS technique is used to create three copies of your data. That's the locally written and stored technique. At the same time, your data is copied to another paired location. So over here, the Central US location is actually paired by Azure with the East US location. So now your data is also available in another region. And over here again, in this secondary region, your data is copied three times using the LRS technique. As a result, even if the central US location went down, you could still access your data in the east US location. So, in the background, the storage service will switch from the central United States to the east United States.

So we have a lot of replication options and redundancy options in place. But remember, in all of these options, cost is also a factor. Over here, you'll be paying twice the cost for storage. So by storing your data in the primary location and storing your data in the secondary location, you will also be paying for bandwidth costs. So the data transfer that is happening from the primary location to the secondary location is something that you also need to pay for. When I said that for large organisations that require data to be available at all times in order to function properly, the benefit of having this in place far outweighs the cost of having geo-redundant storage in place. So it all depends on the needs of the business. Another type of geo-redundant storage is basically read access. Geo Redundant Storage:

The primary distinction here is that in plain georedundant storage, the data in the secondary location is only made available if the primary region fails. Whereas if you look at Access geo-redundant storage here, your data is available at the same time in both the primary and secondary location. So your applications can read data not only from the primary location but from the secondary location as well. So this is the biggest difference. And then we have something known as "GeoZone redundant storage."

Also, read Access. GeoZone Redundant Storage In GeoZone redundant storage, the primary fact is that in the primary region itself, your data is distributed across different availability zones. If you actually looked at plain geo-redundant storage here in the primary region, your data was copied three times using LRS. But in the zone of redundant storage in the primary region, your data is copied across multiple availability zones. So over here, the data is actually made much more available in the primary region, whereas in the secondary region, it is again just replicated using LRS. So again, there are different options when it comes to data redundancy. So I said that if you go on to your storage account, you can actually go ahead and basically choose what redundancy option you want for an existing storage account.

If I go on to all resources, if I go on to my view, if I go on to my daily Lake Gen 2 storage account, then currently the replication technique is locally redundant storage. If I go ahead and scroll down, if I actually go onto the configuration, this is under settings over here. In terms of the replication, I can change it to either geo-redundant storage or read-only geo-redundant storage. Over here, I can't see zone redundant storage because there are some limitations when it comes to switching from one replication technique to another. There are ways in which you can actually accomplish this. But at this point in time, when it comes to our data like the Gentle Storage account, these are the options that we have when it comes to changing the replication technique. Right now in this chapter, I just want to actually go through data redundancy.

15. Azure Storage Account - Access tiers

Hi, and welcome back. Now, in this chapter, I want to go through the Access Tier feature, which is available for storage accounts. So if I go ahead and create a storage account, please know that this is also available for Deerly.com Gen 2 storage accounts. If I go ahead and scroll down and choose storage account, if I go on to the advanced section, and if I go ahead and scroll down here, we have something known as an Access Tier feature. Here, we have two options.

We have the "hot access" tier. This is used to frequently access data. And then we have the Cool Access tier. This is used for infrequent data access. We also have a third option known as the "Archive Access Tier." So this is good for archiving your data. This is basically a feature at the storage account level. This is available at each individual blob level. So if I go on to my containers, if I go on to an existing container, if I go on to a directory, if I go on to one of the files that I have here, I have the option of changing tier.

And in the tier, I have the Hot, the Cool, and the Archive Access tiers. So this is an additional tier that is actually available at the Blob level. At the storage account level, if I go back onto the storage account, if I actually go on to the configuration settings for the storage account, and if I scroll down here in the Blob access tier, the default is the Hot. I told you we could go ahead and select the Cool access tier.

So what exactly are these different access tiers that are actually available for this particular storage account? So when it comes to your Azure storage account, and I said that this is also applicable when it comes to your data lake, Gen 2 storage account, one thing that you actually pay for is the amount of storage that you actually consume. Now, here I'm showing a snapshot of the pricing page that is available when it comes to storing your objects in an Azure storage account. Here you can see the different access tiers, and you can also see that the price becomes lower when you are storing objects in either the code or the archive access tier. In fact, it's very low when it comes to the archive access tier. And when it comes to a data lake, remember that I mentioned that companies will store lots of data.

So you're probably talking about terabytes and even petabytes of data in a storage account. And storage becomes critical at that point. The storage cost becomes very important. So that's why you have these different access levels in place where companies can actually go ahead and look at reducing their storage costs. If they have an object that is not accessed that frequently, they can actually change the access tier of that object to the cool access tier. And if they feel that the object is not going to be accessed at all but they still need to have a backup of the object in place, they can go ahead and choose the Archive Access Tier for that particular object.

And I mentioned that the Archive Access Tier can only be enabled at the individual blob level. So then you might ask yourself, "Why can't we just archive all of our objects?" Because the storage cost is lower, and because of a caveat that exists if you store an object in the Archive Access Tier, you must perform a process known as rehydration if you want to access that object again. So you have to rehydrate that file in order to access the file. So you must go ahead and change the file's access tier, either to HotAccess or CoolAccess, and it takes time to rehydrate the file. So if you need the file at that point in time, you should not choose the Archive Access Tier.

You should choose either the hot or the cool access tier. Next is when it comes to the pricing of objects in either the Hot, the Cool, or the Archive Access Tier. When it comes to the cost of your storage account, there are different aspects when it comes to the costing. One aspect is the underlying storage cost. The other aspects are the operations that are performed on your objects. For example, over here again, I'm showing a snapshot of the documentation page. When it comes to the pricing here, you can see that when it comes to read operations, the read operation of an object in the Cool Access Tier is much higher than an object in the Hot Access Tier, and it gets even worse for objects in the Archive Access Tier.

Next is a concept known as the "early deletion fee." Now, the Cool Access Tier is only meant for data that is accessed infrequently and stored for at least 30 days. If you have a block in the Cool Access Tier and switch to the Hot Access Tier before 30 days, you will be charged an early deletion fee. The same thing goes for the archive access tier. This is used for rarely accessed data that is stored for at least 180 days. And the same idea applies here. If you have a blob in the archive access tier and you change the access tier of the blob earlier than 180 days, you are charged an early deletion fee.

So when you're deciding on the access tier of a particular object, you have to decide based on how frequently that object is being used. If the object is being used on a daily basis, you should choose the Hot Access Tier. If you have objects that are not being accessed that frequently, you can go ahead and choose the cool access tier. And if you want to go ahead and archive objects, you can go ahead and choose the archive accessed here. Now let's quickly go on to Azure. I'll go on to my deal. Gen Two storage account I'll go on to my containers, I'll go on to my data container, I'll go on to my raw folder, I'll go on to my object, and here I'll just change it here to the archive access tier, and I'll go ahead and click on Save. So, remember that we are now saving money on storage costs for the file. But here you can see that this blob is currently being archived and can't be downloaded. You have to go ahead and rehydrate the blob in order to access it.

So here you are if you want to go ahead and access the file. Because even if I go on to edit, I will not be able to see the contents of the file. So I have to go back to my file. And here I have to go ahead and change the tier. I have to change the tier to either the hot or the cool access tier. If I choose either tier, you can see that the reminone has a rehydrate priority. You have two options: Standard and High. In Standard. The object will take some time to be converted back to the Cool access tier. You can see that it may take up to 7 hours to complete. If you choose "high," then it could be completed at a much faster pace. But in either case, it will still take time. So if you have an object that needs to be accessed at any point in time, don't choose the archive access tier. So I just go ahead and cancel this, right? So, in this chapter, we'll go over the various accesses to your storage accounts that the Blob service provides.

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