The document provides an overview of databases, emphasizing the importance of data management through a structured database system facilitated by a Database Management System (DBMS). It explains the difference between data and information, outlines the roles of various users, and highlights the significance of effective database design for accurate information generation. Additionally, it mentions various DBMS software options such as Oracle, Microsoft SQL Server, and MySQL.

1. Database

2. Introduction
• Good decisions require good information derived from raw
facts
• Data is managed most efficiently when stored in a database
• Databases evolved from computer file systems
• Understanding file system characteristics is important

3. Introduction
• Database
– is collection of related data and its metadata organized in a structured format
– for optimized information management
• Database Management System (DBMS)
– is a software that enables easy creation, access, and modification of databases
– for efficient and effective database management
• Database System
– is an integrated system of hardware, software, people, procedures, and data
– that define and regulate the collection, storage, management, and use of data
within a database environment

4. Why Database
• Databases solve many of the problems encountered in data
management
– Used in almost all modern settings involving data management:
• Business
• Research
• Administration
• Important to understand how databases work and interact with
other applications

5. Data vs. Information
• Data are raw facts
• Information is the result of processing raw data to reveal
meaning
• Information requires context to reveal meaning
• Raw data must be formatted for storage, processing, and
presentation
• Data are the foundation of information, which is the bedrock of
knowledge

6. Database Management
System
• Database Management System or DBMS in
short refers to the technology of storing and
retrieving users data with atmost efficiency
along with appropriate security measures.
• In DBMS, we can create its architecture, data
models, data schemas, E-R model, relation
model, relational database design, and storage
and file structure and much more.

7. Users
• A typical DBMS has users with different rights and
permissions who use it for different purposes. Some users
retrieve data and some back it up. The users of a DBMS can be
broadly categorized as follows −

8. Role and Advantages of the
DBMS
• DBMS is the intermediary between the user and the database
– Database structure stored as file collection
– Can only access files through the DBMS
• DBMS enables data to be shared
• DBMS integrates many users’ views of the data

9. Why Database Design Is
Important
• Database design focuses on design of database structure used
for end-user data
– Designer must identify database’s expected use
• Well-designed database:
– Facilitates data management
– Generates accurate and valuable information
• Poorly designed database:
– Causes difficult-to-trace errors

10. DBMS Software
• Oracle
• Microsoft SQL Server
• My SQL
• NO SQL
• MS- ACCESS
• MS- EXCEL