Data Model Concept

Data Model – is a description of the information structure of the data, which determines in what form the data will be arranged and what properties it will have. In other words, how the data from the database will be stacked in Unidata. The data model consists of a number of objects and links between them.

In the “Data Model” section it is available to create and configure the following model objects:

  • Entity.

  • Lookup entity.

  • Entity/Lookup entity attribute (as nested object).

  • Complex attribute (as nested object).

When creating the data model, consider the following features of the model objects:

  • Entity supports complex data structures through nested attributes and array attributes. From the entity you can specify a link to another entity or lookup entity. Typically, entities are used to create a structure for frequently changing data. For example, data about customers, orders, or inventory in the stock.

  • Lookup entity supports simple data structures. All attributes in a lookup entity are at the same level. Lookup entities also contain code attributes that make each record unique. Lookup entities are typically used for infrequently changing reference data. For example, a lookup entity of countries and country codes.