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The 5 DBMS Models You Should Know


Data is a sequence of characters gathered, transformed and analyzed for various purposes. Data comprises a range of text, numbers, media and much more forms.

A database is a structured collection of data which can be gathered, managed and updated. You may say, in simple words, a database is a container for storing information. A bookstore is a perfect example. The bookstore contains a large selection of books, the bookstore is a database, and the books are a set of data.

Database Management Systems (DBMS)

DBMS is a program used for the maintenance of the database. DBMS collects information from a  Database Administrator (DBA). It then directs the program to make the necessary changes. The commands enable loading, recovering or modifying existing system data.

A database requires a comprehensive database software program called DBMS. The database acts as an interface for its end-users or programs. It helps users to control and upgrade the organization and optimization of information. A DBMS also allows for database monitoring and control. There are various examples of DBMS applications.

Application of DBMS in Various Sectors

 A DBMS is an essential tool for industries in different countries. It manages several vital and sensitive information. It is important to first get in touch with a reliable and experienced digital management and web hosting company in your region, such as Freeparking NZ (if your business is New Zealand-based, for example) to set up DBMS and register your preferred domain name.

The following are several industries that majorly use DBMS.


The database stores information about students and teachers or lecturers in educational institutions. Also, the DBMS stores the exam records of students.


DBMS stores information about financial instruments such as stocks and bonds. Banks use DBMS to store customer information, account information, transfers etc.

National Defence

DBMS provides a major security guarantee for military information. Such information includes mission reports and criminal records etc. An authorized staff member can search for anybody's information with DBMS in a few seconds.


Various transport agencies use DBMS to record ticket bookings and schedule details.


Without DBMS, no telecommunications industry can think about its business. DBMS stores the phone details and monthly post-payment bills for these companies.

DBMS Models


Database models show the Conceptual structure of a database. The model comprises associations and limitations which shows how data is processed and accessed. An accompanying database diagram may represent most data models.

5 Types of DBMS Database Models You Should Know

Relational Database


The most common forms of databases are relational databases. They are a list of associations for the database. A relation is a value table.

The values are thus contained in each row in the table. These rows in the table state an entity or relationship in the actual world.

The name of the table and the name of the column assist in the interpretation of meaning for each row.  The data is a series of relationships.

Data is stored as tables in the relational model. The actual storage of data is independent of the logical organization of the data.

Relational databases are part of SQL development. SQL means Structured Query language. SQL is the standard language for Relational Databases. SQL helps to import, read, update and remove records from databases.

The versatility of SQL is one of the key reasons why the relational model is the most used.

Examples of SQL are SQL server and Access (Microsoft) and Oracle and RDB (Oracle).

Hierarchical Model


A hierarchical model displays data in a tree-like structure. There is a single parent for each record. The root in the framework is a single table in the database. Other tables serve as the extensions originating from the root.

To preserve order, there is a sort field that records sibling nodes. This model structure enables a one-to-one relationship between two different forms of data.

Users access records by moving down through the data model.  Pointers merged with synchronous access are used for navigation.

This model is not appropriate for certain database systems. Especially when a complete path is not provided for each dataset. These models are developed for early microprocessor database management systems. An example is the Information Management System (IMS) by IBM.

Entity-Relationship Model


The data model of the Entity-Relationship (ER) is a diagram that represents entities and their associations. It is perfect for database modelling because it is very conceptual and comprehensive.

It has been in existence for about 35 years. An entity is an object or concept that stores data. There are three types of relationship between entities:

One to One

One entity form (A) is related to one other entity form (B).


An entity form (A) is linked with none, one or several other entity form (B). But for one entity B only one entity form is associated. For example a business in one building with all staff.


An entity (A) form has several occurrences of another entity (B). The entity (B) form is correlated with several forms of entity (A). For example, for a company that works on many projects with all its staff.

Object-Oriented Data Model


An object-oriented database presents data in classes and objects. In this type of database, an object is an actual entity, a class is a set of objects. An Object-oriented database follows simple object-oriented programming (OOP) concepts.

Elements of Object-oriented data model Objects

In an object-oriented database model, real entities and events are objects.


The class grouping identifies similar attributes and methods. In a class, there is an object


A new class from the original class is created. The extracted class contains both initial and own attributes and methods

Method and attributes

Each object has some features represented with attributes. Methods show the actions of the objects.

Object-Relational Data Model


The entity-relationship data model (ORD), includes aspects and features of two models. It is said to be the intermediary between object-oriented and relational databases.

In ORD, the fundamental method is based on RDB. The data is stored in a standard database and controlled with queries like SQL. ORD shows that the database is considered an object-oriented object unit.

 This model is designed for object-oriented programming. APIs are used as objects in this case for storing and accessing data.

The goal of ORD is to resolve the disparity between relational and object-oriented databases.  This modelling approach utilizes programming languages like Java, C # and C++.


A database makes information easy to access and manage. Corporations or agencies want a strong database management system. That is because all the appropriate business records are contained in the database.


Published Thursday, September 03, 2020 7:41 AM by David Marshall
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