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Introduction to database database concept
- 1. Introduction to Database1 Introduction to database Prepared and Presented by: Solomon merhawi January 14,2025 Asmara
- 2. Introduction to Database2 Database Introduction to database
- 3. Learning Outcomes • participantswill be able to know the concept of database.
- 4. Introduction to Database4 Introduction to databases ➢Information management ➢Why Study databases? ➢Databases ➢Databases Systems ➢Types of Database ➢Users ➢Examples of Database Applications ➢Conclusion ➢Recommendation
- 5. Introduction to Database5 Information management Introduction to databases
- 6. Introduction to Database Computersystems • In computer systems information is represented by means of data • the data are raw symbols which have to be interpreted and correlated to provide information • Example • data: “solomon” and 929292 • Information: result of looking up a telephone number in your personal telephone directory (e.g., list of contacts) 6
- 7. Introduction to Database7 Why Study Databases? • Databases are useful • Many computing applications deal with large amounts of information. • Database systems give a set of tools for storing, searching and managing this information.
- 8. Introduction to Database8 Databases Introduction to databases
- 9. What is aDatabase? • A set of information held in a computer. • One or more large structured sets of persistent data. • A collection of data arranged for ease and speed of search and retrieval. • usually associated with software to update and query the data. General definition “Technical” definition • A database is a collection of data managed by a DBMS (Database Management System) Introduction to Database 9
- 10. Introduction to Database10 Database Systems • A database system consists of • Data (the database) • Software • Hardware • Users • Database systems allow users to • Store • Update • Retrieve • Organise • Protect their data.
- 11. Introduction to Database11 Database System . . . . users and application programmes DBMS: Database Management System (application-independent services for managing data) 7 Database System DBMS DB databases
- 12. Types of databases- DBMS Relational NoSQL Object-Oriented Document-based Data warehouse Time series In-memory Graph Real-time … and many others… 12
- 13. Introduction to Database13 management of the databse Users • Database administrator: in charge of (centralized) control and • guarantees sufficient performance • ensures system reliability • manages authorizations and access to data • Designers and programmers: they define and realize • the structure of the database • the programmes accesing the database • Users: they use the database for their activities • end users: they use transactions.
- 14. Introduction to Database14 Examples of Database Applications Purchases from the supermarket Purchases using your credit card Booking a holiday at the travel agents Using the local library Taking out insurance Renting a video Using the Internet Studying at university • Web indexes • Library catalogues • Medical records • Bank accounts • Stock control • Personnel systems • Product catalogues • Telephone directories
- 15. Introduction to Database15 The concept of a shared organizational database Accounting Accounts Payable Accounts Receivable Management Control Planning HR payroll Employees Marketing Product Development Sales Corporate Database
- 16. Introduction to Database16 Conclusion A database is an organized collection of structured information, or data, typically stored electronically in a computer system. A database is usually controlled by a database management system (DBMS). Databases provide a structured way to store, retrieve, and analyse information, allowing businesses to make informed decisions. With the increasing volume and complexity of data in today's digital age, databases are essential for storing and accessing data in a secure and scalable manner. A Database Management System (DBMS) is a systematic operational system that consists of tools that make data collection, storage, and manipulation easier.
- 17. Introduction to Database17 Recommendations Database systems play a vital role in managing and organizing vast amounts of data efficiently. Understanding the fundamentals of database systems, such as RDBMS, SQL, normalization, and security, is crucial for anyone working with data. Databases are a fundamental tool for storing and managing data efficiently. It is important to be aware of potential database issues that may arise, such as data security and integrity. Organizations rely on databases to streamline their operations, improve productivity, and enhance customer experiences.