The formal definition of database schema is a set of formulas (sentences) called integrity constraints imposed on a database.
These integrity constraints ensure compatibility between parts of the schema.
The software used in a relational database is called a relational database management system (RDBMS).
A relational database is the predominant choice in storing data, over other models like the hierarchical database model or the network model.
A database schema of a database system is its structure described in a formal language supported by the database management system (DBMS) and refers to the organization of data to create a blueprint of how a database will be constructed (divided into database tables).
The term database is correctly applied to the data and their supporting data structures, and not to the database management system (DBMS).
e Xist-db supports implicit and explicit validation of XML documents.
In Meteor, that data layer is typically stored in Mongo DB.
A set of related data in Mongo DB is referred to as a “collection”.