In This Blog, we are going to learn difference between DBMS and RDBMS, which is very useful and beneficial concept regarding SQL interviews and SQL exams across the world.
Why Do We Need DBMS Or RDBMS ?
DBMS – Database Management System
- In database, a database management system or DBMS is system software that can create, retrieve, update, and manage a database.
- In database, the DBMS was introduced during 1960’s to store any data.
- DBMS also offers manipulation of the data like insertion, deletion, and updating of the data.
- In database, DBMS system also performs the functions like defining, creating, revising and controlling the database.
- DBMS is specially designed to create and maintain data and enable the individual business application to extract the desired data.
RDBMS – Relational Database Management System
- In database, Relational Database Management System (RDBMS) is an advanced version of a DBMS system.
- RDBMS came into existence during 1970’s. RDBMS system also allows the organization to access data more efficiently then DBMS.
- RDBMS is a software system which is used to store only data which need to be stored in the form of tables.
- In this kind of system (RDBMS), data is managed and stored in rows and columns which is known as tuples and attributes.
- Note that RDBMS is a powerful data management system and is widely used across the world.
Difference Between DBMS & RDBMS
|1. Storage||DBMS stores data as a file.||Data is stored in the form of tables.|
|2. Number Of Users||DBMS supports single user only.||It supports multiple users.|
3. Database structure
|DBMS system, stores data in either a navigational or hierarchical form.||RDBMS uses a tabular structure where the headers are the column names, and the rows contain corresponding values|
|4. ACID||In a regular database, the data may not be stored following the ACID model. This can develop inconsistencies in the database||Relational databases are harder to construct, but they are consistent and well structured. They obey ACID (Atomicity, Consistency, Isolation, Durability).|
|5. Type of program||It is the program for managing the databases on the computer networks and the system hard disks.||It is the database systems which are used for maintaining the relationships among the tables.|
|6. Hardware and software needs.||Low software and hardware needs.||Higher hardware and software need.|
|7. Normalization||DBMS does not support Normalization||RDBMS can be Normalized.|
|8. Integrity constraints||DBMS does not support the integrity constraints. The integrity constraints are not imposed at the file level.||RDBMS supports the integrity constraints at the schema level. Values beyond a defined range cannot be stored into the particular RDMS column.|
|9. Distributed Databases||DBMS does not support distributed database.||RDBMS offers support for distributed databases.|
|10. Ideally suited for||DBMS system mainly deals with small quantity of data.||RDMS is designed to handle a large amount of data.|
|11. Client Server||DBMS does not support client-server architecture||RDBMS supports client-server architecture.|
|12. Data Fetching||Data fetching is slower for the complex and large amount of data.||Data fetching is rapid because of its relational approach.|
|13. Data Redundancy||Data redundancy is common in this model.||Keys and indexes do not allow Data redundancy.|
|14. Data Relationship||No relationship between data||Data is stored in the form of tables which are related to each other with the help of foreign keys.|
|15. Security||There is no security.||Multiple levels of security. Log files are created at OS, Command, and object level.|
|16. Data Access||Data elements need to access individually.||Data can be easily accessed using SQL query. Multiple data elements can be accessed at the same time.|
|17. Examples||Examples of DBMS are a file system, XML, Windows Registry, MS Excel etc.||Example of RDBMS is MySQL, Oracle, SQL Server, etc.|