Michael Fitzgerald. Java projects, Java source code and java examples Java is a set of several computer software and specifications developed by Sun Microsystems, later acquired by Oracle Corporation, that provides a system for developing application software and deploying it in a cross-platform computing environment. If we develop an application which uses Amazon's DynamoDB, it can be tricky to develop integration tests without having a local instance. When ready for deployment, you will need to alter your code. Running the WordCount program in C++ The reference for this is the C++ wordcount presented in the Hadoop Wiki [1]. We encourage you to work through one of the language-specific tutorials. When paired with the CData ADO. In Part 2, you'll learn how to integrate Lambda functions with an external database, in this case DynamoDB. The user supplies the database file name, which does not need the. jar aws-jav… ダウンロードと起動 Additional Tools and Libraries For Amazon DynamoDB - Amazon DynamoDB ここまでは公式ドキュメントに載ってる通り。. 6 or later version. We'll demonstrate how to configure an application to use a local DynamoDB instance using Spring Data. Maydene Fisher, Jon Ellis, and Jonathan Bruce, JDBC API Tutorial and Reference, Third Edition , 2003, Addison-Wesley. In this tutorial, we use Java and GUI console examples for conceptual and code clarity. DynamoDB Local is a locally running copy of Amazon DynamoDB server. I will take Dynamodb Local plugin as an example and explain about how to write unit testing with Mocha and chai (expect) test frameworks. AWS Lambda is capable of executing code on AWS Cloud. Java Date Time - LocalDate now() example. The following are top voted examples for showing how to use com. This part is easy. Use Amazon DynamoDB as the big data backend that powers your Java/J2EE applications. In this post, I'll explain what is Thread Local and when to use it, with an example code. They crash the program at run time if they are not handled properly. We have collection of more than 1 Million open source products ranging from Enterprise product to small libraries in all platforms. Introduction to DynamoDB DynamoDB is a cloud based NoSQL database offered by Amazon. In our examples, we will use the high-level API, which provides a direct mapping between Java objects and entries in DynamoDB. In this Udemy Discount Coupon Course, you will learn how to get fit and cleansed, energetic and toned in way less time with this incredible 2-week program!. The following are some of the points considered later in this article: Configure Dev Environment with AWS Credentials; Update POM. Java Magazine. Compressing large data before storing it in DynamoDB. Apache HttpComponents. The general required steps for a query in Java include creating a DynamoDB class instance, Table class instance for the target table, and calling the query method of the Table instance to receive the query object. We'll create an example data model and repository class as well as perform actual database operations using an integration test. These trails are available in book form as The Java Tutorial, Sixth Edition. This lesson will only cover the basics of using these API calls. JCGs (Java Code Geeks) is an independent online community focused on creating the ultimate Java to Java developers resource center; targeted at the technical architect, technical team lead (senior developer), project manager and junior developers alike. Java Magazine. Our example generates a table populated with product information, with products of unique attributes identified by an ID number (numeric attribute). For example, if you ask to retrieve 100 items, but each individual item is 300 KB in size, the system returns 52 items (so as not to exceed the 16 MB limit). Java LocalDate class declaration. DynamoDB Local is a locally running copy of Amazon DynamoDB server. This section contains hands-on tutorials to help you learn about Amazon DynamoDB. They are per session env vars. DynamoDB is a scalable AWS managed NoSQL database. Let's see the declaration of java. So far I have only been able to put it as json string but I cannot find an example of inserting a map anywhere. I will explain relative paths in more detail later in this Java NIO Path tutorial. mail) interface for sending email messages. This article is meant for the individual who has little or no experience in Java GUI programming. 6 or higher (preferably from Sun) The JAVA_HOME environment variable is set the root of your Java installation. - Configuration for DynamoDB properties in application. Using DynamoDB Local JavaScript Shell With the latest version of DynamoDB Local, you can also get an interactive DynamoDB Local JavaScript shell. It's a fully managed, multiregion, multimaster, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications. An easy guide and cheat sheet for beginners to learn HTML, covering several topics on the basic HTML tags you are likely to need when learning how to make your own website. I've built an application using DynamoDB Local and now I'm at the point where I want to setup on AWS. Windows, Mac OS X, Linux with Java SE 8. September 10, 11:00 AM Pacific Time. Locale class represents a specific language and region of the world. Breakdown of a DynamoDB API Call. JournalDev is one of the most popular websites for Java, Python, Android, and related technical articles. This section contains hands-on tutorials to help you learn about Amazon DynamoDB. Failed to load latest commit information. Create simple CRUD Operation Using Serverless Framework. This question checks whether candidate know about static and dynamic nature of array. DynamoDB also provides local and global table indexes for querying. Apache Hama is a java based framework for Big Data analytics. DynamoDB Tutorial - DynamoDB is a fully-managed NoSQL database service designed to deliver fast and predictable performance. The new Oracle Technology Network License Agreement for Oracle Java SE is substantially different from prior Oracle Java licenses. Among other things, cmake will generate makefiles for you. Every variable in C programming has two properties: type and storage class. How to debug AWS lambda functions locally using VS code and lambda-local I've just started using AWS Lambda with node. It's great for playing with the API or substituting a mock implementation that doesn't drain your wallet, but it's very unlikely have the backend implementation and the performance characteristics. To buy this book, refer to the box to the right. Java projects, Java source code and java examples Java is a set of several computer software and specifications developed by Sun Microsystems, later acquired by Oracle Corporation, that provides a system for developing application software and deploying it in a cross-platform computing environment. Java Web Tomcat 8: Provides support for some of the standard Java EE APIs (Servlet, JSTL, EL). https://www. We cover two ways of working with the database: With React-Apollo’s components ( and ) With React-Apollo’s hooks. DynamoDB can be easily integrated with massive data crunching tools like Hadoop /EMR, which is an essential part of this data-driven world and hence it is widely accepted. NET developers to get started with Amazon DynamoDB. Java and the JVM (Java’s virtual machine) are required for many kinds of software, including Tomcat, Jetty, Glassfish, Cassandra and Jenkins. exe will permit anonymous classes inside static init code and static methods, even though the language spec says than anonymous classes are never static. LocalDateTime class. In other words, write a Java program to find longest line from file. You can change the Region by modifying the AmazonDynamoDB properties. Skip to content. Aggregation in Java is a relationship between two classes that is best described as a "has-a" and "whole/part" relationship. For information on how to perform authorization in a web application, see Using OAuth 2. The syntax is mostly derived from C and C++. Java “Back to Basics” Tutorial. On-Demand mode. In this post, we will create Tables on a DynamoDB Database the Java way. For example,. Note : Local variables don’t exist after method’s execution is over. HttpURLConnection instead of URL Fetch. DynamoDB will use a single database file instead of separate files through each region. The sample uses the HBase APIs to communicate with Cloud Bigtable. For example, if an item size is 2KB, two write capacity units are required to perform 1 write per second. It's a fully managed, multiregion, multimaster, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications. Items are the key building block in DynamoDB. Use jest-dynamodb Preset. I will take Dynamodb Local plugin as an example and explain about how to write unit testing with Mocha and chai (expect) test frameworks. Java inner class can be declared private, public, protected, or with default access whereas an outer class can have only public or default access. Information. The local classes are built with JNI (Java Native Interface) to access Notes/Domino binaries in the same process as the JVM (Java Virtual Machine). Among other things, cmake will generate makefiles for you. Java MySQL datasource. It means variable is only accessible inside the method, block or constructor that declared it. The following are top voted examples for showing how to use com. Using a datasource has several advantages over the DriverManager: increased portability, connection pooling, and distributed transactions. This class does not store or represent a time-zone. Further Resources. Using Python. In this article I will show you how create, deploy invoke two serverless AWS Lambda Functions that write and read data to and from a DynamoDB while using the Serverless Framework. Developing General Java Applications. These examples are extracted from open source projects. Every month millions of developers like you visit JournalDev to read our tutorials. In this post, we will create Tables on a DynamoDB Database the Java way. I will show you how to create a Table and perform CRUD operations on it. DynamoDB Create Table January 15, 2018 by Thomas Henson Leave a Comment Maybe it's my background as a Web Developer, but whenever learning a new development stack I want to build a CRUD( C reate, R ead, U pdate, D elete) application first thing. com/archive/dzone/TEST-6804. You can change the Region by modifying the AmazonDynamoDB properties. g "plugins": ["serverless-dynamodb-local"] Using the Plugin. In this post, I will show you how to build a RESTful API in Node. In this tutorial, our choice is Ruby. examples to Java 2 SDK. Instead of creating a secondary index that just duplicates the Reply table, we can choose only to project those 3 attributes and not the Message. An enum is a special type of data type which is basically a collection (set) of constants. DynamoDB also provides local and global table indexes for querying. One difference between Local and Global indexes is that Local. Although not foolproof, doing this has helped me translate many Java 1. NET platform and Python. Inside your AWS Console (after signing up to AWS) select Services from the top and find DynamoDB. Further Resources. I'll skip the example here as it's similar to the previously given examples. The global secondary index is an index with a partition key and sort key that can be different from those on the table. Here’s another example of method scope, except this time the variable got passed in as a parameter to the method: class Test { private int x; public void setX(int x) { this. October 18, 2017 October 18, 2017 John Boyer aws-dynamodb, Java Leave a comment Recently, I've been working on an open-source project ( Todo ) that uses HSQL as an in-memory embedded database. AWS has a downloadable version of DynamoDB that you can run locally. When you use set xx=5 in “cmd. Time is represented to nanosecond precision. In this tutorial, we are going to create simple Java example that creates a Kafka producer. java demonstrating the stream forwarding. We've used a Global Index in our previous example. JournalDev is one of the most popular websites for Java, Python, Android, and related technical articles. And, as always, the full source code for the example app can be found over on Github. DynamoDB also provides local and global table indexes for querying. If you try to execute this on the local machine, you will get connection errors. Introduction to DynamoDB DynamoDB is a cloud based NoSQL database offered by Amazon. You do this by placing your Java code between characters (just like expressions, but without the = sign at the start of the sequence. However, a NumberFormat for the th_TH_TH locale uses Thai digit shapes. js, PHP, Python, or Ruby. About the author: Dan Sullivan holds a Master of Science degree and is an author, systems architect and consultant with more than 20 years of IT experience. In this post, I will show you how to build a RESTful API in Node. Java bottom I just announced the new Learn Spring course, focused on the fundamentals of Spring 5 and Spring Boot 2:. This wikiHow teaches you how to open and run executable JAR files on a Windows or Mac computer. For instructions on using GoogleCredential to do OAuth 2. In this tutorial we will go over all detailed steps to programatically figure out longest line. java demonstrating the user authentification by public key. From within those Competence Centers, we provide coaching to the employee and expert advice towards our customer. dynamodb_table – Create, update or delete AWS Dynamo DB tables list of dictionaries describing indexes to add to the table. In this tutorial, you use the AWS SDK for Java to write simple programs to perform the following Amazon DynamoDB operations: Create a table called Movies and load sample data in JSON format. Java: Setting the AWS Region and Endpoint By default, the code examples access DynamoDB in the US West (Oregon) Region. Once you populate it with some data, you will start to see the file shared-local-instance. For example, say you want to have a panel that shows all activity for the Amazon DynamoDB forum, including Id, ReplyDateTime, and PostedBy, but you don’t need to see the messages in this panel. With today's announcement, DynamoDB developers can now use the AWS SDKs to inject a JSON map into DynamoDB. Types and examples. Hit enter to search. This tutorial is the continuation of Tutorial 2, and uses Hadoop Pipes to run a C++ on the Smith College Hadoop Cluster. 09/14/2018; 10 minutes to read +8; In this article. Reasonable Java experience or AWS Lambda Node. The native method then makes a call back to a Java method. DynamoDB - Local Secondary Indexes - Some applications only perform queries with the primary key, but some situations benefit from an alternate sort key. While the term can refer to global variables, it is primarily used in the context of nested and anonymous functions where some variables can be neither in the local nor the global scope. Supported Platforms: DynamoDB running locally or in AWS. Today we'll build a simple Spring Boot Application and integrate it with DynamoDB. DynamoDB Primary key; Choosing the Right DynamoDB Partition Key. AWS Lambda Java runtime accepts either a zip file or a standalone JAR file - We use the latter in this example. I will use a MERN-Boilerplate code on the master-w-dynamodb as…. We're using AWS because, at the time of this article, it's the most. java demonstrating the file transfer from remote to local Sftp. Lambda + DynamoDB will allow you to access your Dynamo database in a serverless setting. These were easy to configure using AWS Cloudformation. npm install --save [email protected] Shopsarahmac is considered to be a reliable place to buy products at a lower price than you would domestically. Java provides multi-threaded environment support using Java Threads, we know that multiple threads created from same Object share object variables and this can lead to data inconsistency when the threads are used to read and update the shared data. This blog is written by the developers at IDRsolutions about all things related to PDF, Java, HTML5, SVG and other tech related topics. For example, imagine a map of student id that maps to detailed information about the student: their names, a list of their addresses (also represented as a map), etc. This tutorial assumes you already have some familiarity with developing Java applications. This example is written to use access_key and secret_key, but Databricks recommends that you use Secure Access to S3 Buckets Using IAM Roles. On-Demand mode. The following code example instantiates a new AmazonDynamoDB. In this tutorial, we will create a console application and show how to perform basic actions with Java and Azure Files:. I appreciated the straight forward example that i’m sure everyone in the room has used a list add/remove. I'm using DynamoDB local for unit testing. But it is difficult to do much programming just by putting Java expressions inside HTML. ! An issue consists of: IssueId (partition key), Title (sort key), Description, CreateDate, LastUpdateDate,. $ java -Djava. global indexes can be updated. In this post I am going through a full (Java) example of integrating AWS Lambda, DynamoDb and Api Gateway to create a function and expose this function as a HTTP resource for other parties to consume. I'm trying to use the 'cors' parameter of the DynamoDB local (latest version) but it's not working except for the '*'. In this tutorial, we'll explore multiple ways of configuring, starting and stopping a. This article is a simple tutorial showing you how to get started with Byteman. We encourage you to work through one of the language-specific tutorials. DynamoDB can be easily integrated with massive data crunching tools like Hadoop /EMR, which is an essential part of this data-driven world and hence it is widely accepted. Another example of a console program is the Java compiler called "javac. Use jest-dynamodb Preset. They are temporary. 0f double 0. In the following tutorial I will show you how to setup and run a simple integration test that verifies the CRUD functionality of a service using DynamoDB. Java Tutorials This page list down all java tutorials published on HowToDoInJava. (Optional) Use DynamoDB Local. About this task This tutorial shows you how to set up a queue manager QM_APPLE and a queue Q1 on a local stand-alone installation that has no communication links with any other installations of IBM® MQ. java Find file Copy path Alexander Patrikalakis Merge pull request #10 from apivovarov/run_DynamoDBLocalFixture ad0e69e Feb 14, 2017. JCGs (Java Code Geeks) is an independent online community focused on creating the ultimate Java to Java developers resource center; targeted at the technical architect, technical team lead (senior developer), project manager and junior developers alike. File - stores information about a file on a computer drive. js experience. This document provides a step by step tutorial for starting Java programming with Apache Ant. You will send records with the Kafka producer. Accessing DynamoDB from Java or AWS Lambda/Node. You can vote up the examples you like and your votes will be used in our system to generate more good examples. DynamoDB Create Table January 15, 2018 by Thomas Henson Leave a Comment Maybe it's my background as a Web Developer, but whenever learning a new development stack I want to build a CRUD( C reate, R ead, U pdate, D elete) application first thing. Note: Stackdriver Debugger is available for Java 7, Java 8, and Java 9. Install a local DynamoDB development database on your machine dynamolocal cd. It's not bad, but has some drawbacks. x = x; } }. Michael Fitzgerald. This interesting hands-on tutorial will help you understand DynamoDB. The DynamoDB team is launching document model support. Lambda + DynamoDB will allow you to access your Dynamo database in a serverless setting. Rules for Java Local Inner class 1) Local inner class cannot be invoked from outside the method. Amazon DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. We’ll show you how to build systems that dynamically transform your DynamoDB data using. Local secondary index •Same partition key as the base table, but a different sort key. The discussion and examples in this document explain the procedure when the file to be read is a text file that has valid ASCII characters to represent the data. When you use set xx=5 in “cmd. java will produce a byte-code version of the class in a file named Foo. Windows, Mac OS X, Linux with Java SE 8. In this tutorial we create a Lambda function which retrieves this data from the DynamoDB table and expose this functionality over HTTP using API Gateway. gz) Unzip the Pig tutorial file (the files are stored in a newly created directory, pigtmp). In this tutorial I will explain how to use Amazon's S3 storage with the Java API provided by Amazon. A symbol of the ottoman design besides has shelves or underwear so you're able to declare items on them. exe” with the “set” command. For example, the NumberFormat and DateFormat classes are locale-sensitive; the format of the number and date, it returns depends on the Locale. This question checks whether candidate know about static and dynamic nature of array. Java bottom I just announced the new Learn Spring course, focused on the fundamentals of Spring 5 and Spring Boot 2:. This book is a practical, example-oriented guide that begins with an introduction to DynamoDB, how it started, what it is, and its features. Use this as a starting point if you have a particularly good tutorial using the Java 1. THE unique Spring Security education if you’re working with Java today. Given that there are already a number of NoSQL databases available today, the thing that is different for DynamoDB is that we can choose the level of throughput desired. A class variable is also known as static field/variable ,and is shared by all the objects/instances of the class( hence the name "class v. When your Java project requires JAR libraries (Java Archive) to function, you have to configure your project to include the libraries in its build path. In this tutorial, we'll explore multiple ways of configuring, starting and stopping a. When ready for deployment, you will need to alter your code. These examples are extracted from open source projects. The implementation of all these examples and code snippets can be found in the GitHub project - this is a Maven project, so it should be easy to import and run as it is. In this tutorial we will go over all detailed steps to programatically figure out longest line. StreamForwarding. We’ll demonstrate how to configure an application to use a local DynamoDB instance using Spring Data. 0 is a standard specification for allowing end users to securely authorize a client application to access protected server-side resources. The documentation says "You must provide a comma-separated 'allow' list of specific domains. The Java Runtime Environment offers a number of ways to run applications. exe will permit anonymous classes inside static init code and static methods, even though the language spec says than anonymous classes are never static. From there, you can download a single source file or clone the repository locally to get all the examples to build and run. aws-dynamodb-examples / src / test / java / com / amazonaws / services / dynamodbv2 / DynamoDBLocalFixture. Learn how to perform basic operations (GET/PUT/DELETE/UPDATE) on items into DynamoDB using AWS-SDK, Serverless Framework and AWS Lambda. In this tutorial, we will create a console application and show how to perform basic actions with Java and Azure Files:. Many hallways do not secure a pile as mentioned before. In short, it turns a XML file into DOM or Tree structure, and you have to. Java DynamoDB Tutorial Amazon DynamoDB , is a fast and flexible NoSQL database with many great features like predictable performance , massive scalability, data type and model,partitions,JavaScript Web Shell and etc. I'm basically supposed to be writing CRUD operations on a DynamoDB database, which I've done for the most part. Introduction to Computer Science using Java by Bradley Kjell is licensed under a Creative Commons Attribution-NonCommercial 3. 2 Collection. The syntax is mostly derived from C and C++. There is one new Java I/O class to learn about: java. Can DynamoDB sort keys be null? Not if your DynamoDB table has a composed index, which requires a partition key and a sort key. By the end of the book, you will have all that it takes to efficiently use DynamoDB to its utmost capabilities. For example, during deployment to DynamoDB is a NoSQL database running on the Amazon AWS cloud. In this Udemy Discount Coupon Course, you will learn how to get fit and cleansed, energetic and toned in way less time with this incredible 2-week program!. DynamoDB can be easily integrated with massive data crunching tools like Hadoop /EMR, which is an essential part of this data-driven world and hence it is widely accepted. When Should I Use Amazon DynamoDB and When Amazon DocumentDB? Join Amazon DocumentDB and DynamoDB experts to learn about the purpose of each service, the use cases that each is best suited for, and when you should use one instead of the other. Query DynamoDB Items With Java We have a look at querying items in DynamoDB with Java with some example code. The first step gets the DynamoDB boto resource. If you compare the for loop and for-each loop, you will see that the for-each method is easier to write, it does not require a counter (using the length property), and it is more readable. Java Tutorials This page list down all java tutorials published on HowToDoInJava. You can vote up the examples you like and your votes will be used in our system to generate more good examples. Tasks such as compileJava and test then use one or more of those configurations to get the corresponding files and use them, for example by placing them on a compilation or runtime classpath. This allows you to create some interesting, but ill-advised, expressions by using assignment expressions in. How to GET and POST data from DynamoDB table using node. Tutorial on creation of internal and external table, loading data in it, creating views, indexes and dropping table. Reading and modifying the text from the text file in Java. The calculation returns a whole number, representing the number of complete units between the two dates. java program. The total backup storage size billed each month is the sum of all backups of DynamoDB tables. It began as a way to manage website scalability challenges presented by the holiday season load. This wikiHow teaches you how to open and run executable JAR files on a Windows or Mac computer. Short intro into Local and Global Indexes. Global secondary index is an index that have a partition key and an optional sort key that are different from base table’s primary key. Be aware that recursion is resource-intensive and executes slowly, and is therefore generally not appropriate in a script. AWS services or capabilities described in AWS documentation might vary by Region. com is created, written by, and maintained by Yong Mook Kim, aka Mkyong. These timestamps always have those same values regardless of the local time zone. You will also gain insights into DynamoDB Local and CLI commands. It does not contain deeper knowledge about Java or Ant. In other. There are no data types for a variable. Conversion from Local to Web Service Code. dynamodb-localhost. Now I will warn you that support for JPA is not very robust. Java projects, Java source code and java examples Java is a set of several computer software and specifications developed by Sun Microsystems, later acquired by Oracle Corporation, that provides a system for developing application software and deploying it in a cross-platform computing environment. But it is difficult to do much programming just by putting Java expressions inside HTML. For more information, see who can send em. Java 8 examples to format LocalDate to String in default patterns as well as custom date patterns. It uses the Bulk Synchronous Parallel (BSP) computing techniques for massive scientific computations, e. This example is a very simple "hello world" application, using the Cloud Bigtable HBase client library for Java, that illustrates how to: Connect to a Cloud Bigtable instance. Introduction. It inherits Object class and implements the ChronoLocalDate interface. AWS DynamoDB supports two types of indexes: Global Secondary Index (GSI) and Local Secondary Index (LSI). For example, during deployment to DynamoDB is a NoSQL database running on the Amazon AWS cloud. Let's understand how to get an item from the DynamoDB table using the AWS SDK for Java. Jest DynamoDB will provide all required configuration to run your tests using DynamoDB. However, you will realize soon that there is a lot of boilerplate for very simple queries. The college-id item will the primary partition key and data type of number. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. It explains purpose, immutability, instance creation, modification and fetching of Local Date Time classes of java. September 10, 11:00 AM Pacific Time. For the DynamoDB Query and Scan operations, there are three separate steps happening on the DynamoDB server: Retrieve the requested data. Instead, it is a description of the date, as used for birthdays, combined with the local time as seen on a wall clock. I was able to develop these locally using the lambda-local npm package, e. Examples of these applications are below in the "Do you need Java" section. Associations can be described as a "has-a" relationship because the typical implementation in Java is through the use of an instance field. To make it even easier, there is also a Spring community version for DynamoDB which allows you some JPA support. This method of configuration however may not always be practical:. Dynamodb Client Java. jar aws-jav… ダウンロードと起動 Additional Tools and Libraries For Amazon DynamoDB - Amazon DynamoDB ここまでは公式ドキュメントに載ってる通り。. Perform create, read, update, and delete operations on the table. DynamoDB can be easily integrated with massive data crunching tools like Hadoop /EMR, which is an essential part of this data-driven world and hence it is widely accepted. JCGs (Java Code Geeks) is an independent online community focused on creating the ultimate Java to Java developers resource center; targeted at the technical architect, technical team lead (senior developer), project manager and junior developers alike. The example shows you how to create a bucket, list it's content, create a folder into a bucket, upload a file, give the file a public access and finally how to delete all this items. Try to search for some native implementation of the dynamo API in your project language which will hold all the data in memory. That arrangement leads to a. Local index — Basically an alternative range key for the table hash key. Learn how to spread around your debugging using different connection types that make up remote debugging. class” files. Specifically: You have to somehow start the server before your tests run; The server isn't started and stopped before each test so tests become inter-dependent unless you add code to delete all tables, etc. Java Iterator. " This is the program that will read the code in the HelloWorld. Introduction to DynamoDB DynamoDB is a cloud based NoSQL database offered by Amazon.
Post a Comment