> For the complete documentation index, see [llms.txt](https://adkdians.gitbook.io/database-management-system/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://adkdians.gitbook.io/database-management-system/module-1.md).

# MODULE - 1

## 1. Introduction to Databases and transactions

What is database system, 

purpose of database system, 

view of data, 

relational databases, 

database architecture, 

transaction management

## 2. Data Models

The importance of data models, 

Basic building blocks, 

Business rules, 

The evolution of data models, 

Degrees of data abstraction

## 3. Database Design, ER-Diagram

Database design and ER Model: overview, 

ER-Model,

 Constraints,

 ER-Diagrams, 

ERD Issues, 

Codd’s rules, 

Relational Schemas

## 4. Relational database model

Logical view of data, 

keys, 

integrity rules