Core Concept behind recording production record data via data model

using the eav database model for data recording, allows users to build their data models referencing the isa 88 standard litmus production record database is not a batch process control system, but recognizes the validity of the isa 88 hierarchy which, also in combination with for example the isa 95 hierarchy, can still be found at the core of many data models and digital twin models reference https //www researchgate net/figure/isa s95 and isa s88 physical hierarchy models 1 fig3 285583863 https //www researchgate net/figure/isa s95 and isa s88 physical hierarchy models 1 fig3 285583863 based on these standards, data for production events are stored based on a named data model this name or entity in reference to the eav model is called a node name and is the level 0 of the data models hierarchy, which can have optionally 5 additional levels the node name and levels could be understood as folders and subfolders or as elements and sub elements in an xml structure or as key and sub key in a json structure data are recorded as item under each hierarchy level and could be understood as a file in a folder or sub folder or equally they can be understood as the elements content in xml or the value of a key value pair in json users have total freedom to define how many levels the hierarchy is deep and what items are recorded at which level this does also include if a sub level has other sub levels and os on example for a data model with no sub levels example for a data model with one sub level example with 2 sub levels example for 5 sub levels while having a lot of freedom to define the data model, there is also some responsibility which comes with this freedom as there does exist a high risk of creating a data model which does not represent the actual situation of the event which is to be recorded therefore, the creation of a data model should always be done after clearly identifying the actual process the picture below shows how a data model is idealy a translation of the actual production process