Cloud Adapter SDK – Part 2: Functionality by Jeroen Ninck

Introduction

So this is part 2 of a series of blog post describing building a Cloud Adapter for MongoDB. In this part I want to discuss the functionality I want to achieve.

I will use Windows 10 and PowerShell (my favourite Windows shell!) for these blogs. All sources can be found on GitHub.

Parts:

• Part 1: Installation
• Part 2: Functionality
• Part 3
• Who knows!

Just a small warning: Always keep track of Oracle license information and the Oracle certification matrix!

What should it do?

MongoDB has a lot of features we might want to expose in the Cloud Adapter. However I want to start relative simple and I might expend the functionality in the feature. So I want to start with inserting data. A second step will be to find the data by querying it.

MongoDB

MongoDB is a NoSQL database and stores documents. These documents are basically JSON documents (actually BSON):

{

                    "_id" : ObjectId("56fa75781f1378215c215709"),

                    "field1" : "value1"

}

Basically there are no foreign keys. Of course you refer to other documents, however these is no foreign key like in a relational database. Each document does have a primary key called _id (which is of type ObjectId). A document is stored in a collection and a MongoDB database can have multiple collections. A single instance of MongoDB can host multiple databases. Read the complete article here.

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