Important Factors of RDBMS

Introduction to RDBMS:-

• RDBMS stands for Relational Database Management System.
• RDBMS is based on Relational Model.

   RDBMS can be defined as Database Management System (DBMS) where all data visible to the user is organized strictly as tables.

• Examples of RDBMS: SQL, Sybase, Oracle, Microsoft SQL Server, Ingress, DB2, MySQL, PostgreSQL.

Why RDBMS is better than DBMS ?

The main differences between DBMS and RDBMS are given below:

S.NO.	DBMS	RDBMS
1	DBMS stands for Database Management System.	RDBMS stands for Relational Database Management System.
2	DBMS offers an organized way of storing, managing and retrieving information.	RDBMS provides all features of DBMS with an added referential integrity concept.
3	In DBMS, data is stored as a file.	In RDBMS, data are stored in a tabular form.
4	In DBMS, there is no relationship concept.	RDBMS is used to build up the relationship concept between two database objects, i.e., tables
5	In DBMS, Normalization is not available.	In RDBMS, Normalization is available.
6	DBMS supports single user only.	RDBMS supports multiple users.
7	DBMS treats data as files internally.	RDBMS treats data as tables internally.
8	In DBMS, there is no security of data.	In RDBMS, there are multiple levels of security, at logging level, at the command level, at the object level.
9	DBMS does not support client-server architecture.	RDBMS support client-server architecture.
10	DBMS does not support distributed architecture.	RDBMS support distributed architecture.
11	DBMS supports 3 rules of E.F.CODD out of 12 rules.	RDBMS supports minimum 6 rules of E.F.CODD out of 12 rules.
12	In DBMS, ACID (Atomicity, Consistency, Isolation, and Durability) properties of the database must be implemented by the user or the developer.	In RDBMS, ACID (Atomicity, Consistency, Isolation, and Durability) properties of the database are defined in the integrity constraints.
13	DBMS does not impose integrity constraints.	RDBMS impose the integrity constraints.
14	DBMS has to provide some uniform methods to access the stored information.	RDBMS system supports a tabular structure of the data and a relationship between them to access the stored information.
15	DBMS requires low software and hardware requirements.	RDBMS requires high software and hardware requirements.
16	Examples of DBMS: file systems, XML, etc.	Example of RDBMS: MySQL, Postgres, SQL Server, Oracle, etc.

Now, you can say that RDBMS is most secure and useful than DBMS.