DBMS Tutorial | Database Management System

Database Management System (DBMS) tutorial is all about managing and maintaining the data effectively. Our DBMS tutorial is designed for beginners as well as professionals.

What is Data?

Data is a real-world entity or an object. Data is a distinct piece of information or facts that need to be processed. It can be in any form like text, number, picture, measurements, and bytes.
Example: Ankit, Delhi, 12, 80.

What is Information?

When data are processed, organized, structured, and interpreted in a given context, so as to make them useful and meaningful, they are called information.  
Example: Name - Ankit, City - Delhi, Class – 12, Marks – 80.

What is Database?

A database is an organized collection of inter-related data, which helps in insertion, deletion, and retrieval of data efficiently. The database is also used to organize the data or information in the form of tables, views, schemas, reports, etc.

Note: Using the database, you can easily access, update, and delete any information.

Database Management System (DBMS)

A database management system or DBMS is a software used for creating and managing the data in the database easily and effectively. It is basically a set of programs that allow users to store, modify/update, and retrieve information from the database as per the requirements. DBMS also provides security and protection to the database. DBMS acts as a middle layer between the database and the user.

Example: MySQL, MS SQL Server, Oracle, SQL, DB2, Microsoft Access, etc. are different types of database management system.

Characteristics of DBMS

There are various characteristics of a database management system, but following are some important characteristics:

• A database management system (DBMS) should be able to store any kind of data in a database.
• Any database management system should be able to support ACID (atomicity, consistency, isolation, durability) properties.
• The Database management system allows more than one users to access the same database at the same time.
• Backup and recovery are the two main methods that allow users to protect their data from damage or loss.
• It provides multiple views for different users in one organization.
• DBMS follows the concept of normalization to minimize the redundancy of a relation.
• It provides users query language, using which they can easily insert, retrieve, update, and delete the data in a database.

Advantage of DBMS

• Minimal data redundancy or data duplicacy.
• Easy access to data from the database using the query language.
• DBMS provides backup and recovery methods which create an automatic backup of data from software and hardware failures and restores the data if required.
• Minimized data consistency.
• Better data integration.
• DBMS can applies integrity constraint to the data in the database.
• DBMS increases consistency and reduces updating errors.

Disadvantages of DBMS

• A database management system is complex and time consuming to design.
• Cost of software and hardware is high to run DBMS software.
• DBMS consumes a large amount of main memory as well as a huge amount of disk space to make it run efficiently.
• If the database is damaged because of any software or hardware failure, all the application programs will be implicitly affected, which are dependent on it.
• Initial training is required for all the users and programmers to use the DBMS software.

DBMS Concepts

• What is Database Management System?
• Components of DBMS.
• Applications of DBMS
• The difference between file system and DBMS.
• Types of DBMS
• DBMS Architecture
• DBMS Schema
• Three Schema Architecture.
• DBMS Languages.

DBMS ER Model

• ER model: Entity Relationship Diagram (ERD)
• Components of ER Model.
• DBMS Generalization, Specialization and Aggregation.

DBMS Relational Model

• Codd’s rule of DBMS
• Relational DBMS concepts
• Relational Integrity Constraints
• DBMS keys
• Convert ER model into Relational model
• Difference between DBMS and RDBMS
• Relational Algebra
• DBMS Joins

DBMS Normalization

• Functional Dependency
• Inference Rules
• Multivalued Dependency
• Normalization in DBMS: 1NF, 2NF, 3NF, BCNF and 4NF

DBMS Transaction

• What is Transaction
• States of transaction
• ACID Properties in DBMS
• Concurrent execution and its problems
• DBMS schedule
• DBMS Serializability
• Conflict Serializability
• View Serializability
• Deadlock in DBMS
• Concurrency control Protocols

DBMS Indexing

• Indexing in DBMS

Misc

• Advantages of DBMS
• Disadvantages of DBMS
• Data Models in DBMS
• Relational Algebra in DBMS
• Cardinality in DBMS
• Entity in DBMS
• Attributes in DBMS
• Data Independence in DBMS
• Primary Key in DBMS
• Foreign Key in DBMS
• Candidate Key in DBMS
• Aggregation in DBMS
• Hashing in DBMS
• Generalization in DBMS
• Specialization in DBMS
• Super Key in DBMS
• View in DBMS
• File Organization in DBMS
• What is a Cloud Database
• What is a Database
• Levels Of Locking In DBMS
• What is RDBMS
• Fragmentation in Distributed DBMS
• What is Advanced Database Management System
• Data Abstraction in DBMS
• Checkpoint In DBMS
• B Tree in DBMS
• BCNF in DBMS
• Advantages of Threaded Binary Tree in DBMS
• Advantages of Database Management System in DBMS
• Enforcing Integrity Constraints in DBMS
• B-Tree Insertion in DBMS
• B+ Tree in DBMS
• Advantages of B-Tree in DBMS
• Types of Data Abstraction in DBMS
• Levels of Abstraction in DBMS
• 3- Tier Architecture in DBMS
• Anomalies in Database Management System
• Atomicity in Database Management System
• Characteristics of DBMS
• DBMS Examples
• Difference between Relational and Non-Relational Databases
• Domain Constraints in DBMS
• Entity and Entity set in DBMS
• ER Diagram for Banking System in DBMS
• ER Diagram for Company Database in DBMS
• ER Diagram for School Management System in DBMS
• ER Diagram for Student Management System in DBMS
• ER Diagram for University Database in DBMS
• ER Diagram of Company Database in DBMS
• Er Diagram Symbols and Notations in DBMS
• How to draw ER-Diagram in DBMS
• Integrity Constraints in DBMS
• Red-Black Tree Deletion in DBMS
• Red-Black Tree Properties in DBMS
• Red-Black Tree Visualization in DBMS
• Redundancy in Database Management System
• Secondary Key in DBMS
• Structure of DBMS
• 2-Tier Architecture in DBMS
• Advantages and Disadvantages of Binary Search Tree
• Closure of Functional Dependency in DBMS
• Consistency in Database Management System
• Durability in Database Management System
• ER Diagram for Bank Management System in DBMS
• ER Diagram for College Management System in DBMS
• ER Diagram for Hotel Management System in DBMS
• ER Diagram for Online Shopping
• ER Diagram for Railway Reservation System
• ER Diagram for Student Management System in DBMS
• Isolation in DBMS
• Lossless Join and Dependency Preserving Decomposition in DBMS
• Non-Key Attributes in DBMS