File System vs DBMS

File System: Follows a hierarchical structure for data storage. Client-Server Model (DBMS): A database management system (DBMS) operates on a client-server architecture, ensuring efficient data management and retrieval. Why DBMS? Fast Data Search: Searching in DBMS is faster due to indexing and optimized query execution. Efficient Memory Utilization: DBMS optimizes memory usage, reducing redundancy and improving performance. Location Independence: DBMS abstracts data location, making it independent of physical storage constraints. Concurrency Concurrent Access: Multiple users can access and manipulate data simultaneously. Example: Multiple customers can place orders on an e-commerce website at the same time. Concurrency Control Scenarios: Read-Read (RR): Multiple users reading the same data without conflicts. Read-Write (RW): One user reading while another writes, requiring synchronization. Write-Read (WR): A write operation followed by a read, ensuring consistency. Write-Write (WW): Two users attempting to write simultaneously, requiring conflict resolution. Security Role-Based Access Control (RBAC): Access is granted based on user roles (e.g., admin, editor, viewer). Hierarchical Security: Different levels of access permissions ensure controlled data access. Redundancy & Constraints Redundancy Reduction: DBMS minimizes data duplication using normalization. Constraints for Data Integrity: Primary Key: Ensures each record has a unique identifier. Foreign Key: Maintains referential integrity between tables. Unique & Not Null Constraints: Ensure data validity and consistency.

Feb 9, 2025 - 15:13

File System: Follows a hierarchical structure for data storage.
Client-Server Model (DBMS): A database management system (DBMS) operates on a client-server architecture, ensuring efficient data management and retrieval.

Why DBMS?

Fast Data Search: Searching in DBMS is faster due to indexing and optimized query execution.
Efficient Memory Utilization: DBMS optimizes memory usage, reducing redundancy and improving performance.
Location Independence: DBMS abstracts data location, making it independent of physical storage constraints.

Concurrency

Concurrent Access: Multiple users can access and manipulate data simultaneously.
Example: Multiple customers can place orders on an e-commerce website at the same time.
Concurrency Control Scenarios:
- Read-Read (RR): Multiple users reading the same data without conflicts.
- Read-Write (RW): One user reading while another writes, requiring synchronization.
- Write-Read (WR): A write operation followed by a read, ensuring consistency.
- Write-Write (WW): Two users attempting to write simultaneously, requiring conflict resolution.

Security

Role-Based Access Control (RBAC): Access is granted based on user roles (e.g., admin, editor, viewer).
Hierarchical Security: Different levels of access permissions ensure controlled data access.

Redundancy & Constraints

Redundancy Reduction: DBMS minimizes data duplication using normalization.
Constraints for Data Integrity:
- Primary Key: Ensures each record has a unique identifier.
- Foreign Key: Maintains referential integrity between tables.
- Unique & Not Null Constraints: Ensure data validity and consistency.