By Tim Davis - Director of Development.
The MEAN/MERN development stacks have been around for a while. They stand for MongoDb, Express, Angular/React, and Node. (The other main web development stack is LAMP which is Linux, Apache, MySQL, PHP/Perl/Python).
So what exactly is NoSQL?
As you can tell by the name, it is not SQL. SQL datastores are traditional relational databases and are made up of tables of data which are indexed and can be queried using the SQL syntax. Examples are DB2, Oracle, and MySQL. The tables are made up of rows with fixed columns and all records in a table hold the same fields.
NoSQL data is not held in tables. It is held in individual documents which can each hold any number of different fields of different sizes. You can query these documents to produce collections of documents which you can then work with.
Does this sound familiar? Yes, this is exactly how Domino works! Domino was NoSQL before NoSQL.
The main advantage of NoSQL over SQL in app development is that it allows for more flexibility in data structures, either as requirements evolve or as your project scales. It also allows for something called denormalization, which is where you hold common data in each document rather than doing SQL joins between different tables, and this can make for very efficient queries. Again, this is how Domino has always worked. Notes views are essentially NoSQL queries.
The Node server in Domino 10 comes with a ‘connector’ to do the work of talking to Domino. It is based on Loopback and gRPC (both IBM/HCL initiatives) and promises to be very fast. Having this connector built-in means that you as the developer do not need to worry about how to get data out of Domino. HCL have done that job for you. All you have to worry about is what to do with it once you have it, e.g. send it out as a response from an API, show it in Angular or React, or whatever.