NoSQL E-learning Laboratory-Interactive Querying of MongoDB and CouchDB and Their Conversion to a Relational Database

Nowadays there is a great demand to improve teaching in technical sciences by the intensification of practical skills of students. Realisation of this challenge seems to be especially difficult in context of distance learning, because its tools are generally not equipped with appropriate mechanisms. Our research corresponds with this trend, as we propose to develop Moodle platform with the novel activity modules. In the study we focus on database domain, in particular on the new solutions known as NoSQLs. Two of them, MongoDB and CouchDB datastores, are presented in the paper as well as the implementation of the modules which allow to insert, query, update and delete data in an interactive way is also described. Besides, we prepared the dedicated application in order to map the structures of the given document database into their equivalents of the well-known relational model.