Lec 1 Database.ppt
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The document introduces a database systems course, covering topics like code of ethics, required textbooks, and the day's agenda. It defines a database as a shared collection of logically related data stored to meet different user needs. It discusses the evolution from manual and computerized file systems to database systems. A database system models a real-world system with integrated, self-describing records and allows multiple applications and users to concurrently access and manage shared data.
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Content of Lecture
Basic Database Concepts (Definitions)
Different File Systems
Database and its Advantages](https://image.slidesharecdn.com/lec1database-230513110922-33dd0e13/85/Lec-1-Database-ppt-4-320.jpg)
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Lec 1 Database.ppt
- 2. CODE OF ETHICS All students must come to class on time (Attendance will be taken in first 5 to 10 mins) Students should remain attentive during class and avoid use of Mobile phone, Laptops or any gadgets Respect faculty and staff through actions and speech Class participation is encouraged 2
- 3. Text Book Primary Database Systems 8E, C.J.Date, Addison Wesley Pub. Co. (2004). Reference Database Systems: A Practical Approach to Design, Implementation and Management 5E, R.Connolly and P.Begg, Addison-Wesley Pub. Co (2009). Fundamentals of Database Systems, 5E, Elmasri and Navathe, Addison-Wesley, ISBN: 0-201-74153-9.
- 4. Sequence [TodaysAgenda] Content of Lecture Basic Database Concepts (Definitions) Different File Systems Database and its Advantages
- 5. What is a Database
- 6. Database Def-1 A database is a shared collection of logically related data that is stored to meet the requirements of different users of an organization.
- 7. Database Def-2 A database is a self-describing collection of integrated records
- 8. Database Def-3 A database models a particular real world system in the computer in the form of data
- 9. The concept of a shared organizational database Accounting Accounts Payable Accounts Receivable Management Control Planning Manufacturing Production Scheduling Marketing Product Development Sales Corporate Database
- 10. A bit of History Computer initially used for computational/ engineering purposes. Commercial applications introduced File Processing System.
- 11. Different Files Systems Manual File System Computerized File System Database System
- 12. Manual File System Way of managing data using: Pen and Paper Data Storage: Record data on paper. File paper away into folders and cabinets. Data Retrieval: Locate paper from cabinets and folders. Retrieve data from paper. Main disadvantages: Data collection increased by time to time and keeping track of data becomes much difficult.
- 13. Computerized File Processing System A collection of programs that perform services for the end-users such as production of reports
- 14. Computerized File Processing System Program and Data Interdependence Registration Applications Registration Data Files Registration Examination Applications Examination Data Files Examination Library Applications Library Data Files Library
- 15. Computerized File Processing System Fine Books Issued Father Name Name Reg_Number Library Grade Semester Class Address Name Reg_Number Examination Class Address Phone Father Name Name Reg_Number Registration Duplication of Data Vulnerable to Inconsistency
- 16. Database System A database system is a relationship between stored data, a database, users and the hardware or operating system used for the storage.
- 18. Advantages of Database Persistent Data stored in a database can usually last for a long time Shared Data stored in a database can be simultaneously accessed by multiple programs Interrelated Data stored in a database can be combined to produce new data
- 19. 19