Some databases have more complex requirements than do the more traditional applications. This led to the development of additional semantic data modeling concepts that were incorporated into conceptual data models such as the Entity-Relationship (ER) model.
This video introduces the viewer to the concept of conceptual data modeling and describes some of the details of the Entity-Relationship diagram (ERD).
This is a comparison of NoSQL databases from the data modeling point of view. There are many NoSQL system families, namely, Key-Value stores, BigTable-style databases, Document databases, Full Text Search Engines and Graph databases. He explains that NoSQL data modeling is typically driven by application-specific access patterns, i.e. types of queries to be supported. NoSQL …
Many applications are built around a single data model, typically persisted to a data store via an object-relational mapper (ORM) tool. Sometimes you want to have more flexibility, which requires multiple models. Understanding when one model of data just doesn’t fit all use cases is the challenge for the architect. This article discusses some strategies …
This article proposes guidelines to create a conceptual (semantic or architectural) entity/relationship model using a Unified Modeling Language (UML) class diagrams.