Data Storage – Data is generally stored in databases, which are seen in data flow diagrams inside a rectangle with the smaller sides missing. Data Flow – Displays the movement of data with the help of ...

Learn the differences and uses of conceptual, logical, and physical data models for database development, and the benefits and tools of data modeling. Skip to main content LinkedIn Articles ...

The increasing usage of column-oriented NoSQL drives people to define methods to model the data structure of this technology. The data modelling methods require the support of tools or applications to ...

The questions in Logic in the recent CATs can be broadly said to come from areas like Puzzles, Venn Diagrams, Cubes, Quant-based Reasoning. Questions on other popular areas like Deductions and logical ...

A logical data model is usually expressed in a graphical notation, such as an entity-relationship diagram (ERD), or a textual notation, such as a data dictionary. A logical data model is ...