This book assumes that you have access to hardware on which you can install, configure, and code against a database instance. Having elevated admin or sudo privileges on the aforementioned machine will be essential to carrying out some of the tasks described.

Some of the NoSQL databases discussed will only run on a Linux-based operating system. Therefore, prior familiarity with Linux is recommended. As OS-specific system administration is not within the scope of this book, readers who are new to Linux may find value in seeking out a separate tutorial prior to attempting some of the examples.

The Java Virtual Machine (JVM)-based NoSQL databases will require a Java Runtime Environment (JRE) to be installed. Do note that some of them may require a specific version of the JRE to function properly. This will necessitate updating or installing a new JRE, depending on the database.

The Java coding examples will be easier to do from within an Integrated Developer Envorinment (IDE), with Maven installed for dependency management.  You may need to look up additional resources to ensure that these components are configured properly.

In Chapter 6, HBase, you can install the Hortonworks sandbox to get a small HBase cluster set up on your laptop.  The sandbox can be installed for free from https://hortonworks.com/products/sandbox/.

In Chapter 8, InfluxDB, to run the examples you will need to install InfluxDB in a UNIX or Linux environment. In order to run different InfluxDB API client examples, you also need to install a programming language environment and related InfluxDB client packages:

1. Run the InfluxDB Java client: Install JDK and an editor (Eclipse or IntelliJ).
2. Run the InfluxDB Python client: Install Python.
3. Run the InfluxDB Go client: Install Go and the InfluxDB Go client; you can use JetBrains Goland to run the Go code.

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Seven-NoSQL-Databases-in-a-Week. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: http://www.packtpub.com/sites/default/files/downloads/SevenNoSQLDatabasesinaWeek_ColorImages.pdf.

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Now is also a good time to change the initial password. Neo4j installs with a single default admin username and password of neo4j/neo4j."

A block of code is set as follows:

# Paths of directories in the installation.
#dbms.directories.data=data
#dbms.directories.plugins=plugins
#dbms.directories.certificates=certificates
#dbms.directories.logs=logs
#dbms.directories.lib=lib
#dbms.directories.run=run

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

# Paths of directories in the installation.
#dbms.directories.data=data
#dbms.directories.plugins=plugins
#dbms.directories.certificates=certificates
#dbms.directories.logs=logs
#dbms.directories.lib=lib
#dbms.directories.run=run

Any command-line input or output is written as follows:

sudo mkdir /local
sudo chown $USER:$USER /local
cd /local
mv ~/Downloads/neo4j-community-3.3.3-unix.tar.gz . 

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "To create a table, click on the Create table button. This will take you to the Create table screen."