Database Information System - Management Information System
- 1. CHAPTER 6: Understanding Database Management Systems (DBMS)
- 2. βͺ File organization concepts β Database: Group of related files β File: Group of records of same type β Record: Group of related fields. It describes β An entity (person, place, thing on which we store information) β Attribute: Each characteristic, or quality, describing entity β Field: Group of characters as word(s) or number βͺ Bite: group of bit that represents a single character βͺ Bit: smallest unit of data (0) Organizing Data in a Traditional File Environment 2
- 3. What is a DBMS? A Database Management System (DBMS) is software for managing data β’ Think of it as a digital librarian for your information β’ Stores, organizes, retrieves, and protects large amounts of data β’ Acts as a bridge between data and the apps that use it
- 4. Business Benefits of a DBMS β’ Efficiency β Automates tasks and reduces manual work β’ Better Decisions β Accurate, real-time data for smarter choices β’ Data Security β Encryption, access control, and authentication β’ Cost Savings β Avoids duplication, saves space and effort
- 5. Types of DBMS (Overview) There are 5 common types of DBMS: 1. Relational (RDBMS) 2. NoSQL 3. Hierarchical 4. Network 5. Object-Oriented
- 6. Type 1 β Relational (RDBMS) β’ Uses tables with rows & columns β’ Data linked through keys (e.g., Customer ID) β’ Supports SQL for querying β’ Best for structured, interrelated data (e.g., sales, customer info)
- 8. Type 2 β NoSQL β’ Stores data in flexible formats: documents, key-value pairs, etc. β’ Great for big data, unstructured info, or real-time apps β’ Used in social media, streaming, and user activity tracking
- 10. Types 3β5: Specialized DBMS β’ Hierarchical DBMS: Tree-like (parent-child); great for org charts, file systems β’ Network DBMS: Flexible links (many-to-many); good for school data, contacts β’ Object-Oriented DBMS: Stores data as objects; used in engineering or multimedia
- 12. Types 3β5: Specialized DBMS β’ Hierarchical DBMS: Tree-like (parent-child); great for org charts, file systems β’ Network DBMS: Flexible links (many-to-many); good for school data, contacts β’ Object-Oriented DBMS: Stores data as objects; used in engineering or multimedia
- 14. Types 3β5: Specialized DBMS β’ Hierarchical DBMS: Tree-like (parent-child); great for org charts, file systems β’ Network DBMS: Flexible links (many-to-many); good for school data, contacts β’ Object-Oriented DBMS: Stores data as objects; used in engineering or multimedia
- 16. Key Features of a Good DBMS β’ Data Modeling β Visualize how your data connects β’ Fast Storage & Retrieval β Access large data sets quickly β’ Concurrency Control β Multiple users can work at once β’ Security & Integrity β Keep data safe and accurate β’ Backup & Recovery β Restore data in case of error or loss