Download MongoDB Data Modeling by Wilson da Rocha Franca PDF

By Wilson da Rocha Franca

Focus on info utilization and higher layout schemas with assistance from MongoDB

About This Book

  • Create trustworthy, scalable facts types with MongoDB
  • Optimize the schema layout technique to aid purposes of all kinds
  • Use this complete consultant to enforce complex schema designs

Who This publication Is For

This ebook is meant for database pros, software program builders, and designers who've a few past event with MongoDB and now are looking to shift their concentration to the strategies of knowledge modeling. if you want to improve higher schema designs for MongoDB-based functions, this e-book is perfect for you.

What you'll Learn

  • Optimize your types in response to priorities
  • Discover the schemaless document-oriented database design
  • Improve the method of querying a rfile with assistance from indexing
  • Set up a sharded atmosphere with replication
  • Configure the learn choice in keeping with your application's requirements
  • Create potent indexes that might suit your program needs
  • Understand how you can examine the functionality of your queries to prevent functionality issues

In Detail

This booklet covers the elemental innovations in information modeling and likewise will give you the instruments to layout larger schemas. With a spotlight on facts utilization, this booklet will disguise how queries and indexes can impact the best way we layout schemas, with thorough examples and special code.

The publication starts with a short dialogue of knowledge versions, drawing a parallel among relational databases, NoSQL, and for this reason MongoDB. subsequent, the e-book explains the main uncomplicated MongoDB techniques, akin to learn and write operations, indexing, and the way to layout schemas by means of understanding how purposes will use the knowledge. ultimately, we'll speak about most sensible practices that can assist you optimize and deal with your database, proposing you with a real-life instance of information modeling on a real-time logging analytics application.

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Extra info for MongoDB Data Modeling

Example text

Besides data recording, documents are a means to: • Define what data can be read, written, and/or updated in queries • Define which fields will be updated [ 17 ] Data Modeling with MongoDB • Create indexes • Configure replication • Query the information from the database Before we go deep into the technical details of documents, let's explore their structure. JSON JSON is a text format for the open-standard representation of data and that is ideal for data traffic. To explore the JSON format deeper, you can check ECMA-404 The JSON Data Interchange Standard where the JSON format is fully described.

The ER model has a graphical notation that fits all the needs of a logical model. An entity-relationship diagram The physical model The physical model is a model where we have more detailed and less generic information about the data. In this model, we should know which technology should be used. Here, we can include tables, column names, keys, indexes, security roles, validation rules, and whatever detail you as a data modeler think is necessary. Just to make the connection to the three-schema architecture clear, the physical model is in some way linked to the internal level on the architecture because it is in this level that we deal with how the stored data is represented to the user.

But this is only a recommendation. Nowadays, a document can exceed the 16 MB length by using GridFS. GridFS allows us to store documents in MongoDB that are larger than the BSON maximum size, by dividing it into parts, or chunks. Each chunk is a new document with 255 K of size. Names and values for a field in a document There are a few things that you must know about names and values for fields in a document. First of all, any field's name in a document is a string. As usual, we have some restrictions on field names.

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