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What is a Database (DB)?

1. Improved data management: A database provides a structured way to manage data, making it easier to access and manipulate.
2. Increased data integrity: A database provides a way to enforce data integrity constraints, such as primary keys and foreign keys.
3. Enhanced data security: A database provides a way to secure data, including authentication, authorization, and encryption.
4. Better data sharing: A database provides a way to share data among multiple users and applications.

• TDE (Transparent Data Encryption): Encrypts data at rest.
• SSL/TLS: Encrypts data in transit.
• Row-Level Security: Ensures User A cannot see User B's data.

Core Concepts Every DB User Must Know

To master any DB, you need to understand these foundational pillars: What is a Database (DB)

Example: Monthly Sales Performance Report

Period: March 2026
Generated: April 20, 2026 Improved data management : A database provides a

Indexing: Think of this as the book's index at the back of a novel. Without an index, a DB must read every row to find a match (a "full table scan"). With an index, it locates the data instantly. Poor indexing is the number one cause of slow applications. TDE (Transparent Data Encryption): Encrypts data at rest

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