Data Modeling Diagram

An abstract model that organizes some elements of data, standardizing the way they relate to one another as well as to properties of the real world entities, is called a “data model”. Such data model may specify that the data element representing a house can be composed of a number of other elements which, in turn, represent the color and size of this house as well as define its owner.

The term “data model” can be used in two senses. Time to time it refers to an abstract formalization of some objects or relationships, found in a particular application domain. These objects can be products, customers or orders found in some organization. Also it can refer to a set of concepts, which are used for defining the formalizations, such as attributes, entities, tables or relations. Thus, the data model of a banking application may be defined in a way of using the entity-relationship data model.

A data model identifies the structure of the data itself in detail. The data models can be specified in a so-called “data modeling notation”, which is often represented graphically. Such data model can sometimes be referred to as a “data structure”, especially in the context of the languages used in programming. Data models can be complemented by so-called “function models”, usually in the context of the so-called “enterprise models”. In order to simplify managing large quantities of structured as well as unstructured data, the information systems take place as it is their primary function.

Data models can describe the manipulation, the integrity aspects and the structure of some data stored in data management systems, e.g. “relational databases”. Such models typically do not describe any unstructured data, such as email messages, digital audio, pictures, word processing documents, video, etc. The main purpose of having the data models is to support the information systems development in a way of providing the definition as well as the format of some data. The problem is that interfaces and systems can cost more than they should in order to operate them, to build and to maintain. These systems may also constrain the business rather than to support it and a major cause is that the quality of the data models implemented in interfaces and systems is poor.

There are a few facts about the data models, which are known to be arbitrarily different for different systems, resulting to the complex interfaces being required between systems that share data. These interfaces can account for from 25% to 70% of the cost of the current systems. Usually the data simply cannot be shared electronically both with suppliers and customers for a reason of the structure and the meaning of data has not been standardized. As an example: the engineering design data and the engineering drawings for a process plant can still be sometimes exchanged on paper.

There are business rules, which can be often fixed in the structure of a data model, mentioning the specification of how these things are done in a particular place. The meaning of it is that the small changes in the way business is conducted can lead to the larger changes in the interfaces and the computer systems. The problem is that the entity types are often whether not identified or identified incorrectly, which can lead to the replication of the data itself or its structure, or its functionality, together with the attendant costs of that duplication in maintenance and development.

The reason for such problems occurring is a lack of the standards that can ensure that the data models can both be consistent and that they can meet all of the business needs which are required.

A so-called “data model explicitly” is meant to determine the structure of the data itself. The typical applications of the data models include the design of information systems, the database models and the enabling the exchange of data. The specification of the data models is usually determined in a data modeling language.

A “data model instance” may be one of the following kinds, which are “Physical data model”, “Logical data model” and “Conceptual data model”. The last one describes the semantics of a domain, which is a scope of the model. A conceptual schema is there to specify the kinds of propositions or facts, which can be expressed with a usage of the model. In this sense, it can define the allowed expressions in an artificial “language” using a scope, which is limited by the scope of the model. The “Physical data model”, mentioned above is the one describing the physical means by which data is stored, that is concerned with CPUs, partitions, tablespaces, etc. And the last, the “Logical data model” is the one describing the semantics, represented by a particular data manipulation technology, including the descriptions of columns and tables, XML tags and object oriented classes.

These three perspectives are relatively independent from each other. The storage technology can get changed without affecting either the conceptual or the logical model and the table as well as the column structure can be changed without even affecting the conceptual model. Taking it into consideration, the structures must remain consistent with the other model. The table/column type of displaying may differ from a direct translation of the entity attributes and classes, although it must carry out the objectives of the conceptual entity class structure.

Considering all of the nuances mentioned above you may decide to create your own data modeling diagram using one of the most convenient in use applications – ConceptDraw PRO. This software allows making any needed diagram, including the discussed one, within only a short period of time, having the needed solutions from ConceptDraw STORE as well as from this site. Thus, creating data modeling diagram, you may find the “Rapid UML solution” from the “Software Development area” of ConceptDraw Solution Park on this site very useful. Having the vector stencils library named “Activity diagrams” from this solution can simplify your work of drawing the needed diagram using the ConceptDraw PRO diagramming and vector drawing software.

Data Modeling  Diagrams Solutions

Example 1. Data Modeling Diagrams Solutions

Use the Rapid UML solution to draw UML and SysML activity diagrams for your business documents, presentations and websites.

Data Modeling SysML Activity Diagram

Example 2. Data Modeling SysML Activity Diagram

This example illustrates the usage of SysML activity diagrams for data modeling.

See also samples:


Entity Relationship Diagram Examples

ConceptDraw PRO diagramming and vector drawing software offers the Entity-Relationship Diagram (ERD) Solution from the Software Development Area for ConceptDraw Solution Park. How many examples contains the Entity-Relationship Diagram (ERD) Solution! All Entity Relationship Diagram examples were designed and saved for ConceptDraw PRO users. Now they are available from ConceptDraw STORE.Entity Relationship Diagram Examples
Picture: Entity Relationship Diagram Examples
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UML Sample Project

Unified Modeling Language (UML) is a graphical modeling language for describing, visualizing, projecting and documenting of object oriented systems. UML digram is used for modeling of organizations and their business processes, for development the big projects, the complex software applications. Comprehensive UML diagram allows to create the set of interrelated documents that gives the complete visual representation of the modeling system.uml sample project
Picture: UML Sample Project
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UML Activity Diagram. Design Elements

UML Activity Diagram illustrate the business and operational step-by-step workflow of components in a system and shows the overall flow of control.UML Design Elements: Activity (Win, Mac)
Picture: UML Activity Diagram. Design Elements

Structured Systems Analysis and Design Method (SSADM) with ConceptDraw PRO

A waterfall model describes software development process as a sequence of phases that flow downwards. SSADM is one of the implementations of waterfall method. It’s easier to learn about structured systems analysis and design method (SSADM) with ConceptDraw PRO because this software has appropriate tools for creating data flow diagrams. You can use all the three main techniques of SSADM method with special tools and predesigned templates. This data flow diagram illustrates the Structured Systems Analysis and Design Method. This method method considers analysis, projecting and documenting of information systems. Data flow models are the most important elements of SSADM and data flow diagrams are usually used for their description. It includes the analysis and description of a system as well as visualization of possible issues.Payment Data Flow Diagram Example
Picture: Structured Systems Analysis and Design Method (SSADM) with ConceptDraw PRO
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Data Modeling with Entity Relationship Diagram

Data modeling is actively applied in analysis and uses wide set of methods for description the data requirements in a system. One of the most popular and well-known is the ERD method of database modeling. The best ERD tool for the Mac and Windows is ConceptDraw PRO software extended with the Entity-Relationship Diagram (ERD) solution from the Software Development Area for ConceptDraw Solution Park, which is sharpened for professional ERD drawing and data modeling with Entity Relationship Diagram.Data Modeling with Entity Relationship Diagram
Picture: Data Modeling with Entity Relationship Diagram
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Entity Relationship Diagram Software for Mac

ER-modeling nowadays is a very popular approach for database design. If you are tired of looking for a good entity relationship diagram Software for Mac, then your search is almost over. ConceptDraw PRO is a great tool for creating diagrams of any complexity with tons of editable samples and templates. This diagram represents the vector library of the Chen’s and Crow’s Foot notation icons for drawing ERD (entity-relationships diagram). ConceptDraw Entity Relationship Diagram solution delivers the ability to visualize databases structure on both Mac and PC. The "bricks" entity-relationships models are the entity, and the relation. An entity is represented by a rectangle comprising the entity name. It means an object, information about which should be available and stored. A relation is intended to show a relations between two entities. There are several types of relations between entities. To show there are a number of different symbols for the types of relationships.Entity Relationship Diagram Software for Mac
Picture: Entity Relationship Diagram Software for Mac
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Basic Flowchart Symbols and Meaning

While creating flowcharts and process flow diagrams, you should use special objects to define different statements, so anyone aware of flowcharts can get your scheme right. There is a short and an extended list of basic flowchart symbols and their meaning. Basic flowchart symbols include terminator objects, rectangles for describing steps of a process, diamonds representing appearing conditions and questions and parallelograms to show incoming data. This diagram gives a general review of the standard symbols that are used when creating flowcharts and process flow diagrams. The practice of using a set of standard flowchart symbols was admitted in order to make flowcharts and other process flow diagrams created by any person properly understandable by other people. The flowchart symbols depict different kinds of actions and phases in a process. The sequence of the actions, and the relationships between them are shown by special lines and arrows. There are a large number of flowchart symbols. Which of them can be used in the particular diagram depends on its type. For instance, some symbols used in data flow diagrams usually are not used in the process flowcharts. Business process system use exactly these flowchart symbols.Flowchart Symbols and Meaning, workflow diagram symbols, process flow diagram symbols
Picture: Basic Flowchart Symbols and Meaning
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ConceptDraw PRO Database Modeling Software

ConceptDraw PRO is a very easy-to-use and intuitive database design tool which can save you hundreds of work hours. See database diagram samples created with ConceptDraw PRO database modeling database diagram software.Database model layout
Picture: ConceptDraw PRO Database Modeling Software

Data structure diagram with ConceptDraw PRO

Data structure diagram (DSD) is intended for description of conceptual models of data (concepts and connections between them) in the graphic format for more obviousness. Data structure diagram includes entities description, connections between them and obligatory conditions and requirements which connect them. Create Data structure diagram with ConceptDraw PRO.Data structure diagram example
Picture: Data structure diagram with ConceptDraw PRO

UML Diagram

While developing software, it is very important to have a visual model, because it helps to represent the logic and the architecture of an application. Experienced engineers use UML diagrams to denote relationships between classes and their instances. UML is a general language for a set of diagrams like deployment diagrams, object diagrams or use case diagrams. This diagram represents UML class diagram used for a software system development using an object-oriented method. Class diagrams are categorized as static structure diagrams that depict the physical structure of a system. Class diagram divides a software system's structure into "classes". Classes are defined by the methods and variables of objects. UML Class diagram is used to depict relationships and source code dependencies between objects.UML Diagrams
Picture: UML Diagram
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