Type Inference of var Now that you understand the local variable part, it is time to go on to what type inference means. The good news is that this also means what it sounds like. When you type var, you are instructing the compiler to determine the type for you. The compiler looks at the […]

Getting hands-on with Amazon Textract In this section, you will use the Amazon Textract API to read an image file from our S3 bucket and print the FORM details on Cloudwatch. The same can be stored in S3 in your desired format for further use or can be stored in DynamoDB as a key-value pair. […]

Summary This chapter expanded on hybrid networks, which were introduced in Chapter 6. We went into more detail about how on-premises data centers and networks connect to AWS cloud services. You learned about site-to-site VPN connections that use the public Internet to connect into AWS. An important part of using a VPN is to provide […]

Master/detail relationship A Master/detail relationship closely links two objects together, so much so that certain behavior of the child record is affected. This includes sharing, whereaccess to the Master (or parent) record gives access to the detail (or child) record. Master/detail relationships also support roll-up summaries. When Master records are deleted, all child records are […]

Note If you choose the bucket you created earlier in this chapter, either remove the lifecycle policy that will delete any files created in the bucket after 24 hours or check the logs sent to that bucket before those log files are deleted. Your Amazon Kinesis Data Firehose has been set up, but it still […]

6.2  Salesforce Object Search Language (SOSL) Salesforce Object Search Language (SOSL) is a query language specifically designed for searching records in Salesforce. It allows you to search across multiple standard and custom Salesforce objects simultaneously, making it a powerful tool for finding data that meets specific criteria. SOSL queries can be used in various contexts, […]

Passing Constructor and Method Parameters Variables passed to a constructor or method are called constructor parameters or method parameters, respectively. These parameters are like local variables that have been pre-­ initialized. The rules for initializing constructor and method parameters are the same, so we focus primarily on method parameters. In the previous example, check is […]

Registering a Domain with Route 53 You can purchase domains within Route 53 or register domains that have been purchased elsewhere. In Figure 12.2, you can see a domain search being performed in the AWS Management Console. FIGURE 12.2 Registering a domain After the domain is registered, you can configure DNS. In Figure 12.3, you can […]

traceroute traceroute is a useful command-line utility in your troubleshooting arsenal and is used to show the path taken over an IP network from source to destination. It will also tell us the delays to each router hop and, if configured, the DNS name of all the indeterminate routers. The utility is included in every […]

Testing and Validating Connectivity Between Environments Network testing and validation is an important skill for any networking engineer, and in-depth knowledge is expected for you to pass the Advanced Networking exam. Network testing is an ongoing process that begins when you first configure the network. There are many monitoring, logging, and testing tools offered as […]