DBMS Presentation PDF

DBMS Done by : Majd zaatreh Objectives What is Data-how does the computer processes data data presentation in computer What is DBMS Fundamentals of creating database Shapes on DBMS What is Data? Data refers to raw, unorganized facts or information that can be stored and processed by...

DBMS Done by : Majd zaatreh Objectives What is Data-how does the computer processes data data presentation in computer What is DBMS Fundamentals of creating database Shapes on DBMS What is Data? Data refers to raw, unorganized facts or information that can be stored and processed by a computer. It can come in various forms, such as numbers, text, images, audio, or video. Data becomes meaningful when it is processed and organized, turning it into information. How Does a Computer Process Data? Input Data is entered into the computer through input devices like keyboards, mice, or sensors. Storage The data is temporarily held in memory (RAM) or permanently stored on devices like hard drives or SSDs.  Processing The CPU (Central Processing Unit), often called the brain of the computer, processes data using instructions from software programs. This includes tasks like calculations, comparisons, and data transformation. Output Once processed, data is converted into a human- readable format or used by other systems. This output can be displayed on a screen, printed, or transmitted to another device. How Data is Presented in a Computer Computers use binary code (combinations of 0s and 1s) to represent and process data. Binary is the fundamental language of computers, but this raw data can be organized and presented in various ways to make it understandable and usable. 2. Structured Data Presentation Structured data refers to organized information that is formatted into predefined categories, making it easy to access, manage, and analyze. Computers use structured formats to present data in a clear and organized way, often for databases, spreadsheets, and reports. Common Forms of Structured Data Presentation Tables b. Charts and Graphs Arranged in rows and columns, each row represent recored and each column represent field ID Name Age Salary 1 Alice 30 $50,000 2 Bob 25 $40,000  A database is an organized collection of data that is stored and managed electronically. It allows users and applications to efficiently store, retrieve, and manipulate data for various purposes. Fundamentals of creating database Creating a database involves several steps 1. Understanding the Purpose By Define Objectives and Identify Users 2. Requirements Analysis Data to Store , Volume of Data and Relationships  3. Designing the Database 4. Implementation (by using SQL) 5. Querying and Managing Data 6.Maintenance