Book Image

Learn MongoDB 4.x

By : Doug Bierer
Book Image

Learn MongoDB 4.x

By: Doug Bierer

Overview of this book

When it comes to managing a high volume of unstructured and non-relational datasets, MongoDB is the defacto database management system (DBMS) for DBAs and data architects. This updated book includes the latest release and covers every feature in MongoDB 4.x, while helping you get hands-on with building a MongoDB database app. You’ll get to grips with MongoDB 4.x concepts such as indexes, database design, data modeling, authentication, and aggregation. As you progress, you’ll cover tasks such as performing routine operations when developing a dynamic database-driven website. Using examples, you’ll learn how to work with queries and regular database operations. The book will not only guide you through design and implementation, but also help you monitor operations to achieve optimal performance and secure your MongoDB database systems. You’ll also be introduced to advanced techniques such as aggregation, map-reduce, complex queries, and generating ad hoc financial reports on the fly. Later, the book shows you how to work with multiple collections as well as embedded arrays and documents, before finally exploring key topics such as replication, sharding, and security using practical examples. By the end of this book, you’ll be well-versed with MongoDB 4.x and be able to perform development and administrative tasks associated with this NoSQL database.
Table of Contents (22 chapters)
1
Section 1: Essentials
5
Section 2: Building a Database-Driven Web Application
9
Section 3: Digging Deeper
13
Section 4: Replication, Sharding, and Security in a Financial Environment
14
Working with Complex Documents Across Collections

GridFS commands

In the following table is a summary of the more important commands used with the mongofiles utility:

Command Notes
list <filter> This command operates much like the Linux ls or the Windows dir commands. If you specify one or more characters in the filter, you get a list of filenames starting with those characters.
Using Linux as an example, this command is similar to ls xyz* (returns a list of files starting with xyz).
search <filter> This command is the same as list except that a list of filenames matching any part of filter are displayed.
Using Linux as an example, this command is similar to ls *xyz* (returns a list of filenames containing xyz).
put <filename> Copies a file from the local filesystem to GridFS. By default, GridFS uses the local filename.
If you need to have the GridFS filename be different, use the --local option.
Use the --replace option to overwrite an existing GridFS of the same name.
get <filename> The...