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For more details, please go through -<a href="https://www.geeksforgeeks.org/dbms/difference-between-schema-and-instance-in-dbms/"> Difference between Schema and Instance in DBMS</a>

Lect-5 Database Schema representation (FINAL)

For more details, please go through - <a href="https://www.geeksforgeeks.org/dbms/dbms-architecture-2-level-3-level/">DBMS Architecture 1-level, 2-Level, 3-Level</a>

Lect-4: DBMS architectures (1-tier, 2-tier, 3-tier) (Final)

In this video, You will learn about the concepts of the SQL

61. Intro to SQL in DBMS

The Entity-Relationship (ER) model is a conceptual framework used in database design to represent the structure of data and their relationships within an organization.In the ER model, entities represent real-world objects, attributes describe their properties, and relationships define how entities are connected, forming a foundation for designing efficient and structured databases.

18. Intro to ER Model in DBMS

An attribute in a Database Management System (DBMS) is a characteristic of an entity that describes its properties. It is represented as a column in a table, holding specific data values. A primary key is used to uniquely identify an entity, such as a student's roll number. Attributes help in organizing data efficiently for easy retrieval and manipulation. In an Entity-Relationship model, attributes are depicted in an elliptical shape, and can also be subdivided into additional attributes. For more details, check out the full article: <a href="https://www.geeksforgeeks.org/types-of-attributes-in-er-model/">Types of Attributes in ER Model</a>.

Types of Attributes in ER Model

The Relationship (ER) Model describes how entities are related within a database system. It represents entities and relationships, showing how entities interact through relationships like "enrolls" between students and courses. The ER model helps organize data and clarify associations between different data entities. For example, a student named Geeks may enroll in the Placement 100 course, where "enrolls" is the relationship. Understanding these relationships is essential for designing efficient database systems. For more details, check out the full article: <a href="https://www.geeksforgeeks.org/relationships-in-er-model/">Relationships in ER model</a>.

Relationships in ER Diagram

One to One Mapping

Many to One Mapping

Many to Many Mapping

A Database Management System (DBMS) is software that facilitates the creation, management, and manipulation of databases, enabling users to store, retrieve, and manipulate data efficiently.DBMSs provide a structured and organized approach to data storage, ensuring data integrity, security, and easy access through a variety of query and manipulation tools, making them essential in modern information management.

2. Intro to DBMS

1. File System: File systems organize data in a hierarchical structure of directories and files, typically suitable for simple data storage and retrieval but lack advanced data management capabilities like data relationships and efficient querying.2. DBMS (Database Management System): DBMS, on the other hand, offers a structured approach to data storage, enabling complex data modeling, relationships, and efficient querying through the use of tables and a query language (e.g., SQL). It provides features like data integrity, security, and transaction management, making it more suitable for managing large and structured datasets in applications where data relationships and integrity are crucial.

Difference between File System and DBMS

For more details, please go through -<a href="https://www.geeksforgeeks.org/dbms/physical-and-logical-data-independence/"> Physical and Logical Data Independence</a>

7. What is data independence

Practice Problems

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